weakness
n. C / Un. a lack of strength or a specific part of your character that is not very strong. It can also mean a special liking for something that you find hard to resist.
n. the state or condition of lacking physical strength, mental resolve, or structural integrity. Often used to describe a specific character flaw or an irresistible fondness for a particular thing.
Eating too much chocolate is my main weakness.
The manager identified a weakness in the team's communication strategy during the busy holiday season.
While the bridge appeared aesthetically pleasing, engineers discovered a structural weakness in the support beams that necessitated an immediate closure for repairs.
From Middle English wayknesse, weykenesse, replacing earlier Middle English wocnesse, wakenes, wacnesse (“weakness”), from Old English wācnes (“weakness”). Equivalent to weak + -ness.
Uncountable when referring to the general state of being weak; countable when referring to a specific flaw or a strong liking ('a weakness for').