unprepared

unprepared — adjective

1. not in a state of readiness because the actions or arrangements that were needed

1.adjectiveB1
Definition

not in a state of readiness because the actions or arrangements that were needed have not been made in advance.

Example

The students were unprepared for the surprise test on Monday morning.

unprepared for [event] — common preposition pattern

Hugo arrived at the meeting unprepared, without any notes or data.

Common collocations
  • completely unprepared
  • totally unprepared
  • unprepared for
  • caught unprepared
  • unprepared to face
  • remain unprepared
Synonyms
  • not ready

    more general and neutral; 'unprepared' often carries a sense of being caught off guard

  • ill-prepared

    suggests that some preparation was done but it was not enough, whereas 'unprepared' can mean no preparation at all

  • unready

    less common and slightly literary; sounds more dated in everyday speech

Antonyms
  • prepared

    having made the necessary arrangements in advance

  • ready

    in a suitable state for something

Usage Note

Often followed by the preposition 'for' to specify the situation. Common intensifiers include 'completely', 'totally', and 'entirely'. The idiom 'caught unprepared' emphasises the suddenness of the situation.

Common Mistakes

I was unprepared about the interview.
I was unprepared for the interview.
'unprepared' takes the preposition 'for', not 'about'.

Word family

Synonym discussion

Sense: adjective/1

All three describe a lack of readiness, but they differ in degree and use. 'Unprepared' is the most common and neutral term — it simply means no preparation has been done, whether by choice or circumstance. 'Unready' is less frequent and sounds slightly literary or old-fashioned; you might see it in fiction ('the ship was unready for sea') but rarely in everyday conversation. 'Ill-prepared' implies that some effort was made, but it was insufficient or poorly directed — a student who studied the wrong chapters is ill-prepared for the exam, not unprepared. In short: 'unprepared' = nothing done; 'ill-prepared' = not enough done; 'unready' = the formal / literary alternative.

unprepared ↗unreadyill-prepared

Common collocations

Nouns

Adverbs

Phrases

  • caught unprepared
  • leave someone unprepared
  • remain unprepared

Prepositions

Etymology

LatinFrenchEnglish

Formed by adding the prefix 'un-' (meaning 'not') to 'prepared', which is the past participle of 'prepare'. 'Prepare' comes from Latin 'praeparare', from 'prae-' (before) and 'parare' (to make ready). The word has been used in English since the 1500s.