This is the 2054th most frequent Swedish word.
ärligt
"Ärligt" means "honestly" or "sincerely" in English.
The word 'ärligt' is used as an adverb, describing the manner in which the statement is being made.
Jag säger det här helt ärligt.
I say this completely honestly.
This usage shows 'ärlig' as an adjective describing a person as someone who is honest.
Han är en ärlig person.
He is an honest person.
Here, 'ärligt' is used as an adjective complement in a rhetorical question about the moral nature of an action.