い-adjective
でかい
dekaiでかい (dekai) — huge — is an い-adjective: でかかった (past), でかくない (negative), でかくて (te-form), でかいです (polite).
It also means big; enormous.
How でかい conjugates · い-adjective
Drop the final い, then add the ending.
Every form is built on the stem でか. The one that isn't: the polite present, which is the whole word plus です.
でかい
dropsstem + ending
でかかったでかかったpast · It was huge.
でかくないでかくないnegative · It isn't huge.
でかくてでかくてte-form · It's huge and …
でかければでかければif · If it's huge, ...
でかいですでかいですpolite presentkeeps the い
Every い-adjective works this way. The one exception is いい, which conjugates from its older form よい.
PLAIN
| Form | Conjugation | Audio |
|---|---|---|
| present | でかい dekai | |
| past It was huge. | でかかった dekakatta | |
| negative It isn't huge. | でかくない dekakunai | |
| te-form It's huge and … | でかくて dekakute | |
| past negative It wasn't huge. | でかくなかった dekakunakatta | |
| cond. ば If it's huge, ... | でかければ dekakereba | |
| cond. たら When it's huge, ... | でかかったら dekakattara |
POLITE
| Form | Conjugation | Audio |
|---|---|---|
| present | でかいです dekaidesu | |
| past It was huge. | でかかったです dekakattadesu | |
| negative It isn't huge. | でかくないです dekakunaidesu | |
| past negative It wasn't huge. | でかくなかったです dekakunakattadesu |