all-out, full-scale, major | army, guerrilla, military, terrorist | air, bombing | ground | diplomatic, government

launch, mount | be on, go on, take
She took the offensive, challenging her critics to prove their allegations.

~ against
The government is launching an all-out offensive against the drug cartels

appear, be, seem | become | consider sth, deem sth, find sth, think sth
He''s always making rude remarks about women. I find that deeply offensive.

deeply, downright, extremely, grossly, highly, very | quite, rather | deliberately

to
This sort of attitude is very offensive to black people.