to be the done thing / to have a good reputation; to be well in with someone; to be well thought of; to be popular

to be frowned upon

(informal) to have seen it all before, to have survived worse

(informal) on the sly, secretly

(informal) if one is not caught in the act of doing something wrong, one cannot be accused of anything

Alternative spelling of ni vu ni connu

in front of, in the full knowledge of

feminine singular of vulpin

feminine singular of the past participle of voir

sight (something seen) / sight, eyesight, vision / view / view (an individual viewing of a video by a user)