脆(もろ)い

もろい
i-adjective
fragile, brittle
descriptive
Conjugation
AffirmativeNegative
Present脆(もろ)い脆(もろ)くない
Past脆(もろ)かった脆(もろ)くなかった
て form脆(もろ)くて脆(もろ)くなくて
Adverbial脆(もろ)く—
Conditional ば脆(もろ)ければ脆(もろ)くなければ
Conditional たら脆(もろ)かったら脆(もろ)くなかったら
1. fragile, brittle, easily broken
Physically weak and easily damaged or destroyed.
This material is brittle and breaks easily.
Their weak defense was exploited.
Sports context
The old building crumbled easily in the earthquake.
2. weak, vulnerable, easily moved
Emotionally or mentally easily affected. Often used for someone who cries easily or is easily swayed.
彼(かれ)は涙(なみだ)に脆(もろ)い。
He is easily moved to tears.
Common expression
There are aspects where I'm mentally fragile.
I'm a sucker for touching stories and cry right away.

脆(もろ)い describes something that is inherently weak and easily broken — physically brittle or emotionally vulnerable.

Forms

  • Adverb: 脆(もろ)く (fragilely)
  • Noun: 脆(もろ)さ (fragility, brittleness)

USAGE (sense 1, physical):
Refers to materials, structures, or defenses that break easily.

USAGE (sense 2, emotional):
Describes someone who is easily moved or emotionally vulnerable.

Similar words

  • 壊(こわ)れやすい: more neutral 'easy to break' without implying inherent weakness
  • 弱(よわ)い: general 'weak,' broader in scope
  • 脆(もろ)い: specifically suggests brittleness or vulnerability as an inherent quality