Irregular Forms

Adjective		Comparative		Superlative
bon	good	meilleur/e	better	la/le meilleur/e	best
mauvais	bad	pire	worse	la/le pire	worst
petit	small	moindre	less	la/le moindre	least
Adverb		Comparative		Superlative
bien	well	mieux	better	le mieux	best
beaucoup	much	plus	more	le plus	most
mal	badly	pis	worse	le pis	worst
peu	little	moins	less	le moins	least

Note:  Only use the irregular forms of mauvais in the abstract
sense.  If the idea is concrete, you may use plus/moins mauvais and
le/la mauvais.

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This article was used with permission from:
Indo-European Languages