fifty
gb/fˈɪfti/ us/fˈɪfti/
A1
英語
~ 7300
語義
0件の語義
adjective
A1
quantity
1
being 50 in number
Being 50 in number.
用法パターン：
fifty [plural countable noun]
よくある間違い：
Learners sometimes confuse the pronunciation of “fifty” /ˈfɪfti/ with “fifteen” /ˌfɪfˈtiːn/. “Fifty” means 50, while “fifteen” means 15. In writing, they may also mistakenly add an extra ‘f’ and write *fiffty*, which is incorrect.
類義語
50 (Written with digits instead of the word form.)
|
half a hundred (Rare and somewhat old-fashioned or playful.)
対義語
zero (Represents no quantity, the opposite of having fifty of something.)
コロケーション
fifty years
|fifty dollars
|fifty percent
|fifty people
|fifty miles
テーマ
numbers
|daily life
|core_vocabulary
例文
- We invited fifty guests to the wedding.
- The shop is offering fifty percent off all shoes.
- It takes about fifty minutes to get there by bus.
- The class has fifty students this year.
- She saved fifty dollars from her last paycheck.
学習者向け例文
- There are fifty chairs in the room.
- My grandmother is fifty years old.
- He bought fifty apples for the party.
- I can read fifty pages in one hour.
- They live about fifty kilometers from here.
名詞
A1
quantity
2
the number fifty itself
The number 50.
用法パターン：
[number] to fifty
よくある間違い：
Some learners are unsure when to treat “fifty” as a noun. When you talk about the number itself, you can say “Fifty is an even number,” not *“The fifty is an even number.”* Do not use an article before “fifty” when you mean the number in general.
類義語
50 (The digit form of the same number.)
対義語
zero (Represents no amount, in contrast with the positive number fifty.)
コロケーション
up to fifty
|over fifty
|around fifty
|about fifty
|from forty to fifty
テーマ
numbers
|mathematics
|core_vocabulary
例文
- Fifty is half of one hundred.
- You need to score at least fifty to pass the test.
- I can count to fifty in English.
- The speed limit here is fifty.
- He wrote the number fifty on the form.
学習者向け例文
- Fifty comes after forty‑nine.
- Fifty is a big number for a small child.
- She can say all the numbers from one to fifty.
- The answer is fifty, not sixty.
- Please circle the number fifty on the page.
名詞
B1
quantity
3
ages between 50 and 59
The time in someone’s life when they are 50 to 59 years old.
用法パターン：
[someone] is in [possessive] fifties
よくある間違い：
Learners sometimes forget the plural form and say *“He is in his fifty.”* The correct form is “in his fifties” for ages 50–59. Also, do not add “years” after this structure; say “She is in her fifties,” not *“She is in her fifties years.”*
類義語
age 50–59 (More technical or written way to describe the same age range.)
対義語
twenties (A much younger adult age range, often contrasted with the fifties.)
コロケーション
in his fifties
|in her early fifties
|in her late fifties
|mid‑fifties
|reach fifty
テーマ
age
|life stages
|time
|daily_life
例文
- He’s in his mid‑fifties but still plays football every weekend.
- Many people change careers in their fifties.
- She looks amazing for someone in her late fifties.
- By his fifties, he had traveled to every continent.
- People in their fifties often start thinking about retirement.
学習者向け例文
- My father is in his fifties.
- She is in her early fifties but very active.
- Many people in their fifties wear glasses.
- He lost some hair in his fifties.
- Some women change jobs in their fifties.
名詞
B1
quantity
4
the decade of the 1950s
The years 1950 to 1959.
用法パターン：
in the fifties
よくある間違い：
Learners sometimes confuse “in his fifties” (age) with “in the fifties” (the decade 1950–1959). Use “his/her” for age and “the” for the decade. Also, in writing about the decade, English often capitalizes it as “the Fifties” or writes “the 1950s.”
類義語
the 1950s (More explicit and slightly more formal way to name the same decade.)
対義語
the 1960s (The following decade, often contrasted with the fifties in historical or cultural discussions.)
コロケーション
in the fifties
|the early fifties
|the late fifties
|music of the fifties
|fashion of the fifties
テーマ
history
|culture
|time
例文
- Rock and roll became popular in the fifties.
- My grandparents got married in the early fifties.
- The town grew quickly during the fifties and sixties.
- She loves movies from the fifties.
- Housing was much cheaper in the fifties.
学習者向け例文
- My mother was born in the fifties.
- Cars from the fifties look very different.
- People smoked a lot in the fifties.
- This photo is from the late fifties.
- Many new homes were built in the fifties.
名詞
B1
entity
5
banknote worth fifty units
A money note worth 50 dollars, 50 pounds, or another money unit.
用法パターン：
[pay] with a fifty
よくある間違い：
Learners may not realize that “a fifty” by itself can mean a banknote, and may unnecessarily add “note” or “bill” every time. In many contexts, “a fifty” is enough: “Can you break a fifty?” is natural.
類義語
fifty-dollar bill (Specific to US or other dollar currencies; names the same kind of note when the currency is dollars.)
対義語
a one (A banknote of much smaller value, often contrasted with larger notes in everyday speech.)
コロケーション
a fifty-dollar bill
|a fifty-pound note
|pay with a fifty
|two fifties
|break a fifty
テーマ
money
|daily life
|finance
|daily_life
例文
- He paid for the meal with a fifty.
- Do you have change for a fifty-pound note?
- I only have two fifties in my wallet.
- The ATM gave me a fifty instead of smaller notes.
- She slipped a fifty into the donation box.
学習者向け例文
- He gave the waiter a fifty.
- I cannot break a fifty, do you have smaller money?
- She put a fifty-dollar bill on the table.
- The bank machine gave me one fifty and two tens.
- I paid with a fifty and got coins back.
名詞
technical
C1
quantity
6
cricket score of fifty runs
In cricket, a player’s score of 50 to 99 runs in one innings.
用法パターン：
score a fifty
よくある間違い：
Non-cricket speakers may wrongly assume “a fifty” always refers to money. In sports news about cricket, “a fifty” almost always refers to a score of runs, not cash.
類義語
half-century (Standard cricket term for the same range of runs; slightly more formal and common in written commentary.)
対義語
duck (Cricket term for a score of zero runs, often seen as the opposite of a good score like a fifty.)
コロケーション
score a fifty
|hit a quick fifty
|an unbeaten fifty
|back-to-back fifties
|a well-made fifty
テーマ
sports
例文
- She scored a brilliant fifty in yesterday’s match.
- It was his third consecutive fifty in the tournament.
- He fell just short of a fifty when he was out on 48.
- The opener’s quick fifty set up an easy win.
- An unbeaten fifty from the captain guided them home.
学習者向け例文
- The player made a fifty in the game.
- He was happy after scoring his first fifty.
- She hit a fast fifty for her team.
- The captain’s fifty helped them win.
- He wants to score a fifty in every match.
文法
辞書形
fifty
IPA
GB/fˈɪfti/
US/fˈɪfti/
音節・強勢
fifty （1音節）
Stress on 1st syllable (fifty)
活用形
Adjective
- Base: fifty
- Comparative: fiftier
- Superlative: fiftiest
Noun
- Base: fifty
- Plural: fifties
関連語
表現
fifty-fifty
1/fˈɪfti fˈɪfti/
fixed phrase
equally divided or equally likely
Half and half; each side gets the same amount, or each has the same chance.
例文
- We went fifty-fifty on the bill at the restaurant.
- It’s about fifty-fifty whether it will rain tomorrow.
- The votes were split fifty-fifty between the two candidates.
the big five-oh
1/ðə bˈɪɡ fˈaɪv ˈoʊ/
idiom
informal
someone’s fiftieth birthday
A fun, informal way to say someone’s 50th birthday.
例文
- He’s turning the big five-oh next week, so we’re planning a surprise party.
- She doesn’t want to talk about the big five-oh coming up this year.