1. vague, ambiguous, unclear

noun (common) (futsuumeishi) adjectival nouns or quasi-adjectives (keiyodoshi)

2. shady, disreputable

adjectival nouns or quasi-adjectives (keiyodoshi) noun (common) (futsuumeishi)

3. fuzzy

adjectival nouns or quasi-adjectives (keiyodoshi) noun (common) (futsuumeishi) mathematics computing