adverb

critically

Translation

critically, severely, vitally

She looked at the report critically.

It is critically important to follow the rules.

He was critically injured in the accident.

to ((verb)) critically to do (verb) in a critical manner You need to think critically about this issue.

critically ((adjective)) extremely (adjective) This is a critically important decision.

Synonyms: severely, gravely, judgmentally; Antonyms: uncritically, superficially

From the adjective 'critical' + the adverb-forming suffix '-ly'.

It's the adverb form of 'critical'. It describes *how* an action is done (e.g., to think critically).