Na-adjective (keiyodoshi), Nounweak; frail; fragile

I-adjective (keiyoushi)easily moved to tears; given to weeping; lachrymose

Expressions (phrases, clauses, etc.), I-adjective (keiyoushi)soft-hearted; susceptible; sentimental; tender-hearted

Nounbrittleness

Nounembrittlement

Nounvulnerability; weakness; fragility · vulnerability; security hole

Adverb (fukushi)quickly (succumb, collapse, etc.); easily; without resistance (despite hopes to the contrary)

Nounhydrogen embrittlement

Nounfragile state

Nounzero-day vulnerability