poor; meager; feeble; shabby; insubstantial
Describes something lacking in quantity, quality, strength, or substance. Can refer to physical build, content, resources, arguments, etc.
His proposal was insubstantial in content.
A boy with a feeble build was standing there.
He has such a weak build that he gets tired after just a little exercise.
This school's facilities are so poor that we can barely do any experiments.
His vocabulary is so limited that he repeats the same words over and over.
貧弱 describes something poor, meager, or scanty in quality or quantity, while 脆弱 focuses on lack of strength or resilience rather than poor quality.
貧弱 describes a weak, frail body or build, contrasting with the strong, muscular image of マッチョ.