Katsuyo

い-adjective

鈍いにぶい

nibui

dull (e.g. a knife) · N2

鈍い (にぶい, nibui) — dull — is an い-adjective: 鈍かった (past), 鈍くない (negative), 鈍くて (te-form), 鈍いです (polite).

It also means blunt.

How 鈍い conjugates · い-adjective

Drop the final い, then add the ending.

Every form is built on the stem 鈍. The one that isn't: the polite present, which is the whole word plus です.

鈍い dropsstem + ending
鈍かった鈍かったpast · It was blunt. 鈍くない鈍くないnegative · It isn't blunt. 鈍くて鈍くてte-form · It's blunt and … 鈍ければ鈍ければif · If it's blunt, ... 鈍いです鈍いですpolite presentkeeps the い

Every い-adjective works this way. The one exception is いい, which conjugates from its older form よい.

Aa Dimmed forms are too rare in everyday Japanese for the game to quiz.

PLAIN

FormConjugationAudio
present 鈍い にぶい nibui
past It was blunt. 鈍かった にぶかった nibukatta
negative It isn't blunt. 鈍くない にぶくない nibukunai
te-form It's blunt and … 鈍くて にぶくて nibukute
past negative 鈍くなかった にぶくなかった nibukunakatta
cond. ば If it's blunt, ... 鈍ければ にぶければ nibukereba
cond. たら When it's blunt, ... 鈍かったら にぶかったら nibukattara

POLITE

FormConjugationAudio
present 鈍いです にぶいです nibuidesu
past It was blunt. 鈍かったです にぶかったです nibukattadesu
negative It isn't blunt. 鈍くないです にぶくないです nibukunaidesu
past negative 鈍くなかったです にぶくなかったです nibukunakattadesu