Lazier is an adjective. It's the comparative form of lazy.
lazier lazier
lazier
That is the correct spelling of "lazier" (more lazy).
lazier and laziest
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.