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Negative ない Form (Verb Conjugation)

Negative ない Form (Verb Conjugation)

The ない Form is the casual form of negative speech. To form the Negativeない Form for う-verbs, drop the final i of the Pre-ます Form and change it to an a, adding ない right after. If the Pre-ます Form ends with i without a preceding consonant, the Negative ない Form additionally acquires the consonant w.

Example(s):

ikimasu → ikanai (いく/いきます → いかない)
nomimasu → nomanai (のむ/のみます → のまない)
aimasu → awanai (あう/あいます → あわない)
kaimasu → kawanai (かう/かいます → かわない)
The Negativeない Form ofる-verbs is a simple change from their ます Form in that it is a simple transformation of the ます into ない.

Example(s):
tabemasu → tabenai (たべる/たべます → たべない)
mimasu → minai (まる/みます → みない)

The verb いらっしゃる in its ます Form いらっしゃいます defies the general guideline of conjugation in that the Negative ない Form isいらっしゃらない instead of the expectedいらっしゃわない. Given this, the Dictionary Form of verbs could be considered a more reliable base form when conjugation to different forms.