- Asturian: imperfeutu
- Azerbaijani: qeyri-kamil
- Bulgarian: незавършен (bg) (nezavǎršen), несъвършен (bg) (nesǎvǎršen)
- Catalan: imperfecte (ca)
- Czech: nedokonalý m
- Finnish: vajavainen (fi), epätäydellinen (fi)
- Galician: imperfecto m
- German: unvollkommen (de), mangelhaft (de), unvollständig (de), fehlerhaft (de)
- Greek: ατελής (el) m or f (atelís), ελλιπής (el) m or f (ellipís), πλημμελής (el) m or f (plimmelís), ελαττωματικός (el) m (elattomatikós)
- Hebrew: לֹא מוּשְלָם (lo mushlám)
- Hungarian: tökéletlen (hu)
- Indonesian: tidak sempurna
- Irish: anfhoirfe
- Italian: imperfetto (it) m, imperfetta (it) f
- Japanese: 不完全な (ja) (fukanzen na)
- Khmer: ខ្ចោះ (km) (kcɑh)
- Latin: imperfectus
- Maori: takarepa, nawe, kōkau, tōrōkiri
- Old English: unfulfremed
- Plautdietsch: onvollkomen
- Polish: niedoskonały (pl)
- Portuguese: imperfeito (pt)
- Romanian: imperfect (ro) m or n
- Russian: несоверше́нный (ru) (nesoveršénnyj)
- Spanish: imperfecto (es)
- Tagalog: balhag, dihimpit
- Ukrainian: недоскона́лий (nedoskonályj)
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