I-Adjectives   かるい means “light (weight)”

Polite/Distal forms

Casual/Direct/Plain forms 

Just take outですat the end.

The plain form of ありません isない.

Na-Adjectives   しずか means “quiet.”

Polite/Distal forms

ではIs also used in formal (especially in written) situations in place of じゃ.

Casual/Direct/Plain forms                                                     

Just take outですat the end.

The plain form of ありません isない.