baby

baby — noun

1. a child in the first year or two of life, before they can walk on their own or s

1.名詞A1
釋義

a child in the first year or two of life, before they can walk on their own or speak in full sentences.

例句

Mei rocked the baby in her arms until he fell asleep.

rock + the baby (in arms)

Lucas and Priya are expecting their first baby in March.

expecting + a baby (pregnancy)

同義詞
  • infant

    more formal or medical; common in clinics and official forms

  • newborn

    specifically a baby in the first weeks after birth

  • little one

    warm, informal; often used by parents and relatives

反義詞
  • adult

    fully-grown person, opposite end of the age scale

文法句型

have a baby

newborn baby

用法筆記

Often used with possessives or articles (the baby, our baby, her baby). 'Baby' can be paired with names of family roles (baby brother, baby sister) — those are the noun followed by another noun, not the adjective sense.

常見錯誤

My sister had a baby boy yesterday, he is two years old.
My sister had a baby boy yesterday; he is one day old.
💡once a child can talk and walk freely, English speakers usually call them a toddler or child, not a baby.
She is a baby girl of fifteen.
She is a teenage girl of fifteen.
💡'baby girl' refers to a female infant, not a young teenager.

2. a recently born or very young animal that still depends on its mother for food a

2.名詞A2
釋義

a recently born or very young animal that still depends on its mother for food and protection.

例句

The baby elephant stayed close to its mother as the herd crossed the river.

baby + animal name

Ranger Diaz showed the children a baby owl that had fallen from its nest.

同義詞
  • young

    as a noun ('the young of a species'); more formal, used in nature writing

  • newborn

    for very recently born animals

文法句型

a baby + animal name

用法筆記

For many species there is also a special name (kitten, puppy, calf, foal, cub, chick). 'Baby + animal' is the everyday way to refer to the young of any species, especially when the special term is unfamiliar to learners.

常見錯誤

A baby cow is called a baby.
A baby cow is called a calf.
💡most farm animals have specific names for their young; 'baby cow' is informal but understandable.

3. an older child or grown-up who cries, whines, or sulks over small problems, the

3.名詞B1
釋義

an older child or grown-up who cries, whines, or sulks over small problems, the way a much younger child would.

例句

Don't be such a baby — the cut on your knee is tiny.

Don't be such a baby (rebuke)

Citlali called his older brother a baby for refusing to go on the roller coaster.

同義詞
  • crybaby

    fixed compound; even more dismissive, often heard between children

  • wimp

    informal; focuses on cowardice rather than whining

反義詞
  • grown-up

    as a contrast: 'act like a grown-up, not a baby'

文法句型

call somebody a baby

be such a baby

用法筆記

Used to criticise or tease, never as a compliment. Distinguish from sense 1: this sense applies to people clearly old enough to know better. The phrase 'cry baby' is a fixed insult that draws on the same idea.

常見錯誤

You are baby for being scared.
You are such a baby for being scared.
💡this sense needs an article and usually 'such': 'be a baby' or 'be such a baby'.

4. within a family, team, or other close group, the person born last or admitted la

4.名詞B1
釋義

within a family, team, or other close group, the person born last or admitted last — for instance, the last-born among brothers and sisters, or the newest player on a sports team — affectionately kept as that label long after they have grown up.

例句

At forty-two, Olivia is still the baby of the Hayashi family.

the baby of the family

Rookie pitcher Diego is the baby of the team and gets gentle teasing in the dugout.

the baby of the team

同義詞
  • youngest

    neutral and exact; without the affectionate tone

反義詞
  • eldest

    the oldest member of the same group

文法句型

the baby of the family / team / group

用法筆記

Almost always appears with 'the' and 'of (a group)'. The person can be any age — what matters is being youngest within the named group. Distinguish from sense 1, which is about literal age.

常見錯誤

He is the baby in the family, he is forty.
He is the baby of the family
💡he is forty but the youngest of five children.' — use 'of' to introduce the group.

5. a loving name people use for a partner, sweetheart, or romantic interest, often

5.名詞B1
釋義

a loving name people use for a partner, sweetheart, or romantic interest, often instead of using their first name.

例句

Nia kissed her boyfriend's forehead and whispered, 'Goodnight, baby — drive safely.'

vocative use between partners

Aiden whispered, 'I missed you, baby,' as he hugged his wife at the airport.

同義詞
  • honey

    very common between partners; less sexual, also used to children

  • sweetheart

    warm and slightly old-fashioned; broader than romantic use

  • darling

    more British; can be romantic or merely friendly

文法句型

used as a vocative: Hey, baby

用法筆記

Strongly tied to romantic relationships. From a stranger — especially a man to a woman he doesn't know — it can sound rude or harassing rather than friendly. Use only with partners or in song lyrics.

常見錯誤

Excuse me, baby, where is the train station?' (to a stranger).
Excuse me, where is the train station?
💡calling a stranger 'baby' often sounds disrespectful or flirtatious in an unwanted way.

6. a project, plan, or invention that one person started, cares about deeply, and f

6.名詞B2
釋義

a project, plan, or invention that one person started, cares about deeply, and feels personally responsible for, often as if it were their own child.

例句

The community garden is Mrs. Camille's baby — she has been tending it for twenty years.

X is somebody's baby (project)

The new payment app was Rafael's baby, so he stayed late every night to fix the bugs himself.

同義詞
  • brainchild

    focuses on the idea or invention rather than ongoing care

  • pet project

    very close in meaning; emphasises personal favourite, not always created by the person

文法句型

somebody's baby = their project

用法筆記

Almost always preceded by a possessive (his / her / Nia's). The thing is usually something the person founded, designed, or championed against opposition. Carries warm, slightly protective feeling — using it about someone else's project can sound dismissive of your own role.

常見錯誤

The annual report is the baby of the team.
The annual report is the team's baby.
💡with this sense the possessive comes before 'baby', not as 'of' phrase.

7. a machine, vehicle, weapon, or other object that the speaker thinks is impressiv

7.名詞C1
釋義

a machine, vehicle, weapon, or other object that the speaker thinks is impressive, powerful, or fun to use, talked about with pride or excitement.

例句

Watch this baby fly — the new drone can stay up for forty minutes.

watch / look at / try this baby (object showcase)

Officer Kim patted the patrol car's hood and grinned: 'This baby does zero to sixty in five seconds.'

同義詞
  • beauty

    very close: 'this beauty' / 'this baby'; both express admiration

  • beast

    stresses raw power rather than affection

文法句型

that baby = that object

用法筆記

Strongly informal and slightly masculine in flavour; often heard in adverts, sales pitches, and movie dialogue about cars, gadgets, and gear. Almost always with 'this', 'that', or 'these'.

常見錯誤

Look at the baby, my new printer.
Look at this baby
💡my new printer.' — the demonstrative 'this/that' is essential; 'the baby' would be misread as a real infant.

baby — verb

baby — adjective