不负责任、敷衍、粗心

1. irresponsible, perfunctory, careless

adjectival nouns or quasi-adjectives (keiyodoshi)

不冷不热的，半生不熟的，半心半意的，模糊的

2. lukewarm, half-baked, halfhearted, vague

adjectival nouns or quasi-adjectives (keiyodoshi)

3. (already) enough

adverb (fukushi) adjectival nouns or quasi-adjectives (keiyodoshi)

4. considerably, quite, rather, pretty

adverb (fukushi)