ally
gb/ˈælaɪ/ us/ˈælaɪ/
B1
English
~ 6500
Senses
0 senses
Noun
B1
entity
1
supporter on your side
A person, group, or country that helps and supports another side, especially in politics or war.
Usage pattern:
[someone/something] is an ally of [someone/something]
Common mistake:
Learners sometimes say *"He is ally with us"*. In most cases you need an article and the preposition **of** or **to**: **"He is an ally of ours"** or **"He is an ally to us."** Also, do not confuse **ally** (a friend or supporter) with **enemy** (someone who is against you).
Synonyms
partner (Suggests working together toward a goal, not always in a conflict or power struggle.)
Antonyms
opponent (An opponent is on the other side of a conflict or competition, not supporting you.)
Collocations
close ally
|key ally
|loyal ally
|military ally
|political ally
|longtime ally
Themes
politics
|war
|society
|relationships
Examples
- Canada has long been a close ally of the United States.
- During the war, several smaller countries became allies of the major powers.
- She knew she would need strong allies inside the company to push through the changes.
- The party’s main allies in parliament threatened to withdraw their support.
- Finding allies among local leaders was crucial to the success of the project.
Learner examples
- France was an important ally in the war.
- We need strong allies if we want to win this fight.
- He is a key ally of the president.
- Small countries often look for powerful allies.
- The workers found allies in the local community.
Noun
B2
entity
2
supporter of a marginalized group
A person who is not part of a minority group but works to support and help that group.
Usage pattern:
[someone] is an ally to [a group]
Common mistake:
Learners sometimes think **ally** here means just "friend." In social-justice contexts, an **ally** is more specific: someone **not in the group** who actively supports its rights. A simple friend who does nothing for the cause is not usually called an ally in this sense.
Synonyms
supporter (More general and does not clearly show that the person is *outside* the group they support.)
Antonyms
opponent (An opponent works against the rights or interests of the marginalized group.)
Collocations
LGBTQ+ ally
|straight ally
|true ally
|strong ally
|white ally
Themes
society
|activism
|equality
|relationships
|politics
Examples
- As a straight ally, he speaks out against homophobia at work.
- The training teaches managers how to be effective allies to Black employees.
- Many companies now encourage staff to join LGBTQ+ ally networks.
- Being an ally means listening more than you speak.
- She thanked her allies for standing beside her community during the protest.
Learner examples
- He is not gay, but he is an LGBTQ+ ally.
- Good allies listen to the people they want to help.
- The group needs more allies in positions of power.
- She tries to be an ally to people with disabilities.
- Being an ally means you speak up when you see unfair treatment.
Verb
formal
B2
action
3
join with someone for support
To connect yourself or your group with another group or cause so you can support each other.
Usage pattern:
to ally [yourself/something] with [someone/something]
Common mistake:
Learners often forget the reflexive form and say *"ally with"* when they mean **"ally yourself with"** in more formal writing (e.g. **"He allied himself with the rebels"**). In everyday speech, however, **"ally with"** is also common and acceptable: **"They allied with the rebels."**
Synonyms
align (Focuses more on having similar opinions or positions; **ally** suggests a more active or strategic partnership.)
Antonyms
oppose (To oppose is to work against a person, group, or cause instead of joining with them.)
Collocations
ally oneself with
|ally with
|ally against
|ally closely with
Themes
politics
|war
|society
|core_vocabulary
|relationships
Examples
- Several small parties allied themselves with the government to form a majority.
- The company has allied with local charities to improve its public image.
- He refused to ally himself with any political faction.
- The rebels allied themselves with foreign troops against the regime.
- Environmental groups have allied with farmers to fight the new law.
Learner examples
- The two groups decided to ally themselves with each other.
- They do not want to ally with that party.
- Some countries allied with the United States.
- The workers allied themselves with the students during the protest.
- Our company will ally with a local partner in Asia.
Noun
B2
entity
4
helpful thing that supports you
A thing that helps you and makes it easier for you to reach your goal.
Usage pattern:
[something] is an ally in [activity]
Common mistake:
Learners may think **ally** must always refer to a person or country. In modern English it is also common and natural to call helpful things like sleep, time, or technology an **ally**. The structure is often **"X is your best/greatest ally."**
Synonyms
asset (Stresses that something is valuable or useful; **ally** keeps the idea of active help or support, almost like a partner.)
Antonyms
obstacle (An obstacle makes it harder to reach your goal, the opposite of a helpful ally.)
Collocations
your best ally
|powerful ally
|unexpected ally
|important ally
Themes
daily life
|success
|health
|core_vocabulary
Examples
- In language learning, curiosity can be your greatest ally.
- Good sleep is a powerful ally in fighting illness.
- Technology has become an important ally for small businesses.
- In this climate, time is not our ally.
- A simple checklist can be an unexpected ally against mistakes.
Learner examples
- Sleep is your best ally during exams.
- Practice is an important ally when you learn a new skill.
- Water can be a strong ally on a hot day.
- In this game, speed is your ally.
- Planning ahead is a good ally when you are busy.
Grammar
Dictionary form
ally
IPA
GB/ˈælaɪ/
US/ˈælaɪ/
Syllables & stress
ally (1 syllable)
Stress on 1st syllable (ally)
Word forms
Noun
- Base: ally
- Plural: allies
Verb
- Base: ally
- 3rd Person Singular: allies
- Present Participle: allying
- Past: allied
Word family
Forms
allies
noun
allying
verb
allied
verb
Core family
alliance
noun B1
Advanced or less common
allyship
noun
Expressions
ally of convenience
1/ˈælaɪ əv kənvˈinjəns/
fixed phrase
formal
temporary and mainly useful ally
A person, group, or country that you work with only because it is useful now, not because you are true long-term friends.
Examples
- Many saw the militia as an ally of convenience rather than a trusted partner.
- The two companies are allies of convenience in this lawsuit.
- History shows that allies of convenience can quickly become rivals.
ally oneself with
1/ˈælaɪ wˌʌnsˈɛlf wˈɪθ/
fixed phrase
formal
join yourself with another side
To decide to support another person or group and work together with them.
Examples
- Several smaller parties chose to ally themselves with the ruling coalition.
- Fearing isolation, the company allied itself with a larger competitor.
- He refused to ally himself with either side in the dispute.
be an ally
1/bˈi ən ˈælaɪ/
fixed phrase
act as a supportive ally
To behave in a way that helps and supports a group you are not a member of, especially a minority or marginalized group.
Examples
- If you want to be an ally, start by listening.
- The workshop teaches managers how to be allies to LGBTQ+ staff.
- Being an ally means taking action, not just using the right words.
close ally
1/klˈoʊs ˈælaɪ/
fixed phrase
very strong and trusted ally
A person, group, or country that supports you very strongly and has a very good, trusting relationship with you.
Examples
- Germany is a close ally of France within the European Union.
- She has been a close ally of the mayor for many years.
- The organization needs close allies inside the government to make real change.
key ally
1/kˈi ˈælaɪ/
fixed phrase
especially important ally
An ally that is very important to your plan or success.
Examples
- Japan is a key ally of the United States in the region.
- Young voters became a key ally in passing the new law.
- The unions will be a key ally in any attempt at reform.
natural ally
1/nˈæt͡ʃɚəl ˈælaɪ/
fixed phrase
likely supporter due to shared interests
Someone or something that would normally support you because you want similar things or share the same problems.
Examples
- Environmental groups see farmers as natural allies on this issue.
- Small businesses are natural allies of local government on downtown renewal.
- Students can be natural allies of teachers when it comes to improving schools.
political ally
1/pəlˈɪtɪkəl ˈælaɪ/
fixed phrase
supporter in politics
A person or group in politics that supports your ideas or your party and works together with you.
Examples
- She met with key political allies to discuss the vote.
- The governor has lost several important political allies over the issue.
- He is seen as a close political ally of the prime minister.
staunch ally
1/stˈɔnt͡ʃ ˈælaɪ/
fixed phrase
very firm and loyal ally
An ally who supports you very strongly and does not change their support easily.
Examples
- He remained a staunch ally of the president even during the scandal.
- The senator has long been a staunch ally of the healthcare industry.
- They are staunch allies of animal-rights groups.
strategic ally
1/stɹətˈid͡ʒɪk ˈælaɪ/
fixed phrase
formal
ally for long-term advantage
A country, company, or group that you choose as an ally because it gives you long-term advantages, for example in security, business, or power.
Examples
- Australia is considered a strategic ally in the Pacific region.
- The firm is looking for a strategic ally in the Asian market.
- Being a strategic ally of the U.S. brings both benefits and risks.
true ally
1/tɹˈu ˈælaɪ/
fixed phrase
genuinely supportive ally
A person who really supports you or your group and shows it with actions, not just words.
Examples
- She proved to be a true ally during the crisis.
- A true ally is ready to give up some of their own comfort or power.
- Many people call themselves allies, but few are true allies when things get difficult.