intentionally

intentionally — adverb

1. done because the person meant to do it, having thought about it ahead of time an

1.adverbB2
Definition

done because the person meant to do it, having thought about it ahead of time and chosen to act that way — the opposite of something happening by accident or without thinking.

Example

Theo intentionally left his phone at home so he would not be distracted during the exam.

intentionally + verb for planned action

The artist intentionally chose bright colours to make the painting feel warm and cheerful.

Common collocations
  • intentionally leave
  • intentionally avoid
  • intentionally hurt
  • intentionally choose
  • intentionally break
  • not intentionally
  • intentionally mislead
  • intentionally ignore
Synonyms
  • deliberately

    very close in meaning; 'deliberately' often stresses that the person took time to think before acting

  • on purpose

    informal phrase; 'intentionally' is more neutral in register

  • knowingly

    emphasises that the person was aware of the consequences or facts

  • purposely

    focuses on the specific goal the person had in mind

Antonyms
  • accidentally

    the most direct opposite — something done by mistake, not by plan

  • unintentionally

    the formal antonym; used especially in legal or professional contexts

  • involuntarily

    describes actions done without conscious choice, like a sneeze or a reflex

Grammar Patterns

intentionally + verb

verb + intentionally

not + intentionally

Usage Note

Pairs with verbs that describe controllable actions (leave, choose, hurt, break, avoid, ignore). Often used in the negative ('not intentionally') to say something happened by accident. The adverb can sit before or after the verb; the pre-verb position ('intentionally left') is slightly more common in everyday speech.

Common Mistakes

He intentionally broke the vase by accident.
He broke the vase by accident.' or 'He intentionally broke the vase.
'intentionally' and 'by accident' contradict each other; pick one.
I did not mean to do it intentionally.
I did not do it intentionally.
'intentionally' already means 'on purpose,' so 'mean to' adds unnecessary repetition.

Word family

  • intention
    nounB2
  • intentional
    adjectiveB2
  • unintentional
    adjectiveC1
  • unintentionally
    adverbC1
  • intend
    verbB1

Synonym discussion

Sense: adverb/1

All five describe actions that are not accidental, but each brings a different shade. 'Intentionally' is the neutral all-purpose choice: it states that the person meant to do what they did, without commenting on how much they thought about it ('She intentionally skipped breakfast'). 'Deliberately' adds the idea that the person took time to consider the decision — it implies thoughtfulness, not just intent ('He deliberately chose the slower route to enjoy the view'). 'On purpose' is the informal spoken equivalent: children use it ('I didn't do it on purpose!'), and adults reach for it in casual conversation. 'Purposely' zeroes in on the goal the person wanted to achieve ('She purposely arrived early to get a front-row seat'). 'Knowingly' shifts the focus from the act itself to the actor's awareness of its consequences, which is why it appears frequently in legal language ('He knowingly gave false information'). A useful rule of thumb: for general 'not by accident,' use 'intentionally'; for a thoughtful, weighed choice, use 'deliberately'; for everyday speech, use 'on purpose.'

Common collocations

Adverbs

  • quite intentionally
  • very intentionally
  • somewhat intentionally
  • not intentionally

Phrases

  • intentionally left out
  • intentionally avoided
  • intentionally chosen
  • intentionally harmed
  • done intentionally
  • said intentionally

Etymology

LatinOld FrenchMiddle EnglishEnglish

Built from the noun 'intention' plus the adverb-forming suffix '-ly'. 'Intention' entered English in the 1300s from Old French 'intencion' (purpose, design), which came from Latin 'intentio' (a stretching out, effort, purpose). The Latin noun is the action form of 'intendere' — literally 'to stretch toward' — made of 'in-' (toward) and 'tendere' (to stretch). So the original picture behind 'intentionally' is of stretching your mind toward a target, just as you might stretch your arm to reach something you want.