English Reference
adjective · adverb

fearful

adj. · adv.
US /ˈfɪɹfəɫ/ UK /fˈiəfəl/ fear·ful

  1. 01 B2 Upper Intermediate

    adj.feeling afraid that something bad might happen.

    adj.feeling or showing fear; apprehensive that a particular outcome may occur.

    Simple

    Many people are fearful of losing their jobs during the economic crisis.

    In context

    The residents remained fearful of further flooding, keeping their most valuable possessions on the upper floors of their homes.

    Usage

    Often followed by the preposition 'of' or a 'that' clause.

  2. 02 B2 Upper Intermediate

    adj.something that is very scary or frightening.

    adj.causing or capable of causing fear; inspiring awe or dread.

    Simple

    The tiger let out a fearful roar that echoed through the trees.

    In context

    The storm unleashed a fearful power, uprooting ancient oaks and tossing small boats onto the shore like toys.

  3. 03 C1 Advanced Formal

    adj.extremely bad or unpleasant.

    adj.shockingly bad or intense; used to emphasize a negative quality.

    Simple

    The accident was a fearful sight that I will never forget.

    In context

    The refugees had endured fearful hardships during their long journey across the border.

    Teacher's tip

    In modern English, this sense is often replaced by 'terrible' or 'horrific' in casual speech.

  4. 04 C2 Proficiency Dialect

    adv.used to mean 'very' or 'extremely' in some local styles of speaking.

    adv.used as an intensifier meaning 'extremely' or 'very'.

    Simple

    It is fearful cold outside this morning, so wear a heavy coat.

    In context

    He was a fearful long time in returning from the village, causing his family much worry.

    Usage

    Typically used as an intensifier before an adjective.

And voters might be fearful that if they try to vote by mail it won’t be counted.

The Conversation· 25 Aug 2026

The party has long been fearful of public reaction to deaths of senior officials and public figures.

BBC News· 18 Aug 2026

From Middle English ferful, fervol, equivalent to fear + -ful.

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

This entry
Origin Middle English ferful
Level B2 · Upper Intermediate
Frequency Frequent
Updated