OpenEtymology

weakness

UKˈwiːknəsUSˈwiːknəs

Meaning

1n

The state or condition of lacking strength, power, or vigor.

2n

A fault or defect in character or a system.

3n

A particular fondness or irresistible liking for something.

Structure

word structure
1
weak
lacking strength
+
2
ness
state or quality

Usage

The patient complained of general fatigue and muscle weakness.

His biggest weakness is his tendency to trust people too easily.

She has a weakness for dark chocolate and vintage cars.

Etymology

The word 'weakness' is a transparent Germanic compound. Its core, 'weak', descends from the Old English wāc, which carried meanings of being pliant, yielding, or lacking physical force. This term is part of a wider Germanic family, related to Old Norse veikr and Dutch week. The suffix '-ness' is one of the most productive noun-forming elements in English, directly inherited from the Old English -nes, which denoted an abstract state or condition. Therefore, the literal construction "the state of being weak" has remained semantically stable from its Old English origins to its modern usage, where it describes both physical lack of strength and metaphorical flaws or vulnerabilities.

Analysis

Structure
weak (lacking strength) + ness (state or quality)=weaklacking strength+nessstate or quality

- weak: From Old English wāc (pliant, yielding, weak), of Germanic origin. Functions as the core adjective root describing the quality. - ness: From Old English -nes, -ness, a suffix forming nouns of state or quality, from Proto-Germanic. Functions as a nominalizing suffix.

Weakness Meaning & Word Parts (weak + ness) | OpenEtymology