adverb

strongly

Translation

strongly, firmly, greatly

I strongly disagree with your opinion.

The wind blew strongly all night.

She feels strongly about animal rights.

strongly + ((verb)) to do something with strength I strongly advise you to leave.

to feel strongly about ((sth.)) to have a strong opinion about something He feels strongly about protecting the environment.

Synonyms: powerfully, firmly, vehemently; Antonyms: weakly, gently

From the adjective 'strong' plus the adverb-forming suffix '-ly'.

It adds 'strength' to the verb or adjective it modifies, like 'strongly agree'.