(comparative more very well, superlative most very well)
- Used other than as an idiom: see very, well.
- He managed the company very well.
- He understood very well that there might be difficulties.
- (idiomatic) Used to weaken the effect of certain modal verbs.
- It may very well rain this afternoon.
- I can't very well talk to you and concentrate on sanding this at the same time.
- (used to weaken the effect of modal verbs): The improbability introduced by may is weaker in It may very well rain than in It may rain. Likewise, the impossibility meant by can't is weaker in I can't very well talk than in I can't talk.