ancestor
gb/ˈænsˌɛstɚ/ us/ˈænsˌɛstɚ/
B1
English
~ 8700
Senses
0 senses
Noun
B1
entity
1
person from an earlier family generation
A person in your family who lived long ago, such as your great‑grandparents and earlier, from whom you come.
Usage pattern:
[someone]'s ancestor; an ancestor of [someone]
Common mistake:
Learners sometimes confuse *ancestor* with *elder* or *old person*. *Ancestor* is not just any old person; it must be someone you are directly related to from an earlier generation. For example, an old neighbor is not your ancestor. Learners also sometimes say "my ancestors from 20 years ago"; usually, *ancestors* are several generations back, not recent relatives like parents.
Synonyms
forebear (Slightly more formal; almost the same meaning, but used more in writing than in everyday speech.)
|
forefather (Usually male and often used for respected or founding ancestors, sometimes in a national or cultural sense.)
Antonyms
descendant (Refers to someone who comes after you in the family line, the opposite direction of an ancestor.)
Collocations
distant ancestor
|direct ancestor
|common ancestor
|trace one's ancestors
|honor one's ancestors
|ancient ancestors
Themes
family
|history
|culture
|relationships
|core_vocabulary
Examples
- She discovered that one of her ancestors came from a small village in Italy.
- Our ancestors had to survive harsh winters without modern heating or medicine.
- He feels a strong connection to his Native American ancestors.
- Many families gather once a year to remember their ancestors and tell old stories.
- DNA tests can sometimes help people find unknown ancestors.
Learner examples
- My ancestors came from China many years ago.
- She wants to learn about her ancestors and where they lived.
- We looked at old photos of our ancestors.
- He is proud of his ancestors and their hard work.
- They told the children stories about their ancestors.
Noun
technical
B2
entity
2
earlier species in evolutionary line
An older kind of plant, animal, or other living thing from which a newer kind developed over time.
Usage pattern:
an ancestor of [a species/group]
Common mistake:
Learners may think *ancestor* in this sense always refers to humans, but in biology it can refer to any earlier life form, including plants, animals, or microorganisms. Another confusion is between *ancestor* and *old species*; a species can be old without being a direct ancestor of another.
Synonyms
progenitor (More formal and technical; often used in scientific writing about the first form of a species or group.)
Antonyms
descendant species (Refers to a later species that comes from an earlier ancestor species in evolution.)
Collocations
common ancestor
|human ancestor
|distant ancestor
|early ancestor
|shared ancestor
|evolutionary ancestor
Themes
biology
|science
|evolution
|nature
Examples
- Scientists believe that whales and hippos share a common ancestor that lived millions of years ago.
- The fossil may represent an early ancestor of modern birds.
- All domestic dogs are descended from a wolf‑like ancestor.
- Researchers are trying to identify the last common ancestor of all life on Earth.
- This fish is considered an ancestor of land‑living vertebrates.
Learner examples
- Scientists say humans and chimpanzees have a common ancestor.
- This animal is an ancestor of modern horses.
- All dogs have a wild ancestor.
- The fossil shows an ancestor of many birds.
- They study ancient bones to learn about our early ancestors.
Noun
B2
entity
3
earlier version that led to something
An older type of thing, like a machine or idea, that came before and led to the one we have now.
Usage pattern:
an ancestor of [a thing/system]
Common mistake:
Learners sometimes think *ancestor* can only refer to people. In modern English it is also common, especially in writing, to talk about the *ancestor* of a machine, technology, or idea. However, this is still a literal relationship of earlier and later forms, not just anything old.
Synonyms
forerunner (Emphasizes that something came before and prepared the way for what followed; slightly more formal.)
|
precursor (More formal and often used in technical or academic writing for something that comes before and leads to something else.)
Antonyms
successor (Refers to something that comes after and replaces or develops from an earlier form, the opposite direction of ancestor.)
Collocations
ancestor of modern computers
|ancestor of today's smartphones
|spiritual ancestor
|cultural ancestor
|primitive ancestor
Themes
technology
|history
|culture
|core_vocabulary
Examples
- The telegraph is often seen as an ancestor of modern digital communication.
- This early calculating machine was a direct ancestor of the computer.
- Silent films were the ancestors of today's movies.
- Some people call the typewriter the spiritual ancestor of the laptop.
- These simple tools are ancestors of the complex machines we use now.
Learner examples
- The first cameras were ancestors of modern phones with cameras.
- This old machine is an ancestor of the computer.
- Silent movies are ancestors of the films we watch today.
- The typewriter is an ancestor of the laptop.
- That simple game was an ancestor of many video games.
Noun
technical
C1
entity
4
earlier node in a tree structure
In computer science, a part of a tree structure that is above another part and connected to it through one or more parent steps.
Usage pattern:
an ancestor of [a node]
Common mistake:
Learners may confuse *ancestor* with *parent* in tree structures. A parent is only one level above, but an ancestor can be any level above, including the parent, grandparent, and so on.
Synonyms
parent (node) (Refers only to the node directly above another, while *ancestor* can include the parent, grandparent, and so on.)
Antonyms
descendant (node) (Refers to nodes below another in the tree, the opposite direction from an ancestor node.)
Collocations
ancestor node
|common ancestor node
|ancestor element
|direct ancestor
|proper ancestor
Themes
technology
|computer_science
|science
Examples
- In this tree, every node except the root has at least one ancestor.
- The algorithm finds the lowest common ancestor of the two nodes.
- In HTML, a div can be an ancestor element of many nested elements.
- You can check if one node is an ancestor of another by following parent links upward.
- The root node is an ancestor of all other nodes in the tree.
Learner examples
- In a tree, the root is an ancestor of all other nodes.
- This program finds the common ancestor of two nodes.
- A parent node is one kind of ancestor node.
- Every node except the root has at least one ancestor.
- We move up the tree to look at ancestor nodes.
Grammar
Dictionary form
ancestor
IPA
GB/ˈænsˌɛstɚ/
US/ˈænsˌɛstɚ/
Syllables & stress
an - cest - or (3 syllables)
Stress on 1st syllable (an)
Word forms
Noun
- Base: ancestor
- Plural: ancestors
Word family
Forms
ancestors
noun
Negative and opposite forms
descendant
noun B2
Expressions
ancestor worship
1/ˈænsˌɛstɚ wˈɚʃɪp/
fixed phrase
religious honoring of ancestors
A religious or cultural practice where people show respect to dead family members, often with prayers or offerings.
Examples
- Ancestor worship is an important part of many East Asian cultures.
- The festival includes rituals of ancestor worship at family altars.
- Anthropologists studied local forms of ancestor worship in the village.
common ancestor
1/kˈɑmən ˈænsˌɛstɚ/
fixed phrase
technical
shared earlier ancestor
A person or living thing in the past that two or more people or species come from.
Examples
- Genetic studies show that humans and gorillas share a common ancestor.
- All these languages can be traced back to a common ancestor.
- The diagram helps students find the common ancestor of the three species.
direct ancestor
1/dɪɹˈɛkt ˈænsˌɛstɚ/
fixed phrase
ancestor in a straight family line
An ancestor who is in your direct family line, like parent, grandparent, great‑grandparent, and so on, not a cousin or uncle.
Examples
- Only direct ancestors like grandparents and great‑grandparents are included on this chart.
- Your mother is a direct ancestor, but your aunt is not.
- The law gives special rights to descendants of direct ancestors who owned the land.
distant ancestor
1/dˈɪstənt ˈænsˌɛstɚ/
fixed phrase
ancestor from many generations ago
An ancestor who lived many generations before you, far back in time.
Examples
- She discovered a distant ancestor who fought in the civil war.
- Legends say their distant ancestors came from across the sea.
- He feels a connection even to distant ancestors he knows little about.
honor one's ancestors
1/ˈɑnɚ wˈʌnz ˈænsˌɛstɚz/
fixed phrase
show respect to past family members
To show respect and thanks to family members who lived before you, often in a special ceremony or on a holiday.
Examples
- They visit the family graveyard every year to honor their ancestors.
- Cooking traditional food is one way we honor our ancestors.
- The ceremony was held to honor the ancestors of the community.
trace one's ancestors
1/tɹˈeɪs wˈʌnz ˈænsˌɛstɚz/
fixed phrase
research your family history
To look for records and information to find out who your family members were in the past.
Examples
- She used online records to trace her ancestors back to the 1700s.
- Many people now try to trace their ancestors using DNA tests.
- He became interested in history after tracing his ancestors.