English Reference
noun

weakness

n.
US /ˈwiknəs/ UK /wˈiːknəs/ weak·ness UK spelling weakness's

  1. 01 B1 Intermediate

    the state of not being strong, either in your body or your character.

    the state or condition of lacking physical strength, mental resolve, or moral power.

    Simple

    After the long illness, he felt a great deal of weakness in his legs.

    In context

    The regime's inherent weakness became apparent when it failed to respond effectively to the initial wave of peaceful protests.

    Usage

    uncountable in this general sense

    frailtyfeeblenessfragility
  2. 02 B2 Upper Intermediate

    a specific part of someone's character or a thing that is not good enough.

    a specific flaw, shortcoming, or disadvantage in a person, argument, or object.

    Simple

    The coach pointed out several weaknesses in the team's defense.

    In context

    While the essay was well-researched, its primary weakness lay in the author's failure to address conflicting evidence from recent studies.

    Usage

    countable; often used when evaluating performance or plans

    flawshortcomingdefect
  3. 03 B2 Upper Intermediate

    a strong liking for something that you find hard to resist, even if it is not good for you.

    a particular fondness or inability to resist something indulgent.

    Simple

    I have a real weakness for chocolate cake after dinner.

    In context

    Despite his disciplined lifestyle, he confessed to having a lifelong weakness for expensive Italian leather shoes.

    Usage

    usually follows the pattern 'a weakness for [something]'

Usage identify weakness · weakness identify

I like all of these politicians and their campaign people, see their strengths and weaknesses, and always try to remember they are human.

Toronto Sun· 14 Aug 2026

That tension exposed a weakness in the early generations of machine-based search.

Ars Technica· 7 Aug 2026

From Middle English wayknesse, weykenesse, replacing earlier Middle English wocnesse, wakenes, wacnesse (“weakness”), from Old English wācnes (“weakness”). Equivalent to weak + -ness.

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

This entry
Origin Middle English wayknesse
Level B2 · Upper Intermediate
Frequency Common
Updated