효용성이 · 효용성을
usefulness, utility, effectiveness
Example
새 제도의 효용성에 대해 의문이 제기되었습니다.
Questions have been raised about the usefulness of the new system.
Word parts
효 effect+용 use+성 quality
-성 = '-ness, quality': 효용성, 실효성, 유효성, 가능성.
Good to know
Pronounced [효용썽] — the -성 suffix is often tensed.
Related words