English Reference
adjective · adverb · noun

unlikely

adj. · adv. · n.
US /ənˈɫaɪkɫi/ UK /ʌnlˈaɪkli/ un·like·ly

  1. 01 B1 Intermediate

    adj.not likely to happen or be true.

    adj.not likely to occur, exist, or be true; having a low probability.

    Simple

    It is unlikely that the weather will improve before the weekend.

    In context

    Given the current economic climate, it seems highly unlikely that the central bank will consider lowering interest rates before the next quarter.

    Usage

    Often used in the pattern 'it is unlikely that' or 'subject + is unlikely to'.

    Pitfall
    It is unlikely for him to come. It is unlikely that he will come.

    While 'unlikely to' is common with a person as the subject, when using 'it is unlikely', follow it with a 'that' clause rather than a 'for...to' construction.

  2. 02 B2 Upper Intermediate

    adj.not looking like it will be successful.

    adj.not holding out a prospect of success; unpromising or unlikely to result in a positive outcome.

    Simple

    The team made an unlikely start to the season but eventually won the cup.

    In context

    Despite such an unlikely beginning in a cramped basement office, the startup eventually transformed into a global market leader.

    Teacher's tip

    In this sense, the word often describes a person or situation that succeeds despite having poor initial prospects.

    unpromisingunfavourable
  3. 03 C2 Proficiency Formal

    adv.in a way that is not likely.

    adv.in an improbable or unlikely manner.

    Simple

    The story ended quite unlikely, with everyone becoming friends.

    In context

    The events unfolded most unlikely, defying the predictions of every political analyst in the country.

    Usage

    Rarely used as an adverb in modern English; 'improbably' is much more common.

    improbably
  4. 04 C2 Proficiency Literary

    n.a person or thing that is not expected to succeed or happen.

    n.an entity, person, or event considered to have a low probability of occurrence or success.

    Simple

    He was an unlikely among the candidates for the promotion.

    In context

    In the realm of professional sports, she remained the ultimate unlikely, a player whose physical stature suggested she could never compete at the highest level.

Don't confuse

unlikely vs unlike — Unlike compares two different things, while unlikely describes a low probability.


From Middle English unlykely, unlikly, unlykly, unlicli, equivalent to un- + likely.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Middle English unlykely
Level B1 · Intermediate
Frequency Common
Updated