The root word is care.
Care
careless- which is to now care.
The root is care.
The word "carelessly" has two suffixes: "-less" and "-ly." The suffix "-less" changes the meaning of the root word "care" to indicate the absence of something (careless means without care). The suffix "-ly" is an adverbial suffix that modifies the adjective "careless" to form the adverb "carelessly," which describes how an action is performed.
The comparative form of "carelessly" is "more carelessly."
Carelessly has 2 suffixes
Carelessly is an adverb.
"Bob carelessly stepped on the loose rock and twisted his ankle." "Many people act carelessly when they are in familiar surroundings."
Uncoordinated. Cumbersome. Bunglesome
The opposite of carefully is carelessly.Both carefully and carelessly are adverbs.
The word carelessly (uncautiously) is an adverb. The word careless is an adjective.
noun: street