go overboard
to do or say something that is too extreme for a particular situation

[TahlilGaran] Dictionary of Contemporary English ▲

go overboard
to do or say too much because you are so enthusiastic.
I think I went overboard in decorating my house for Christmas.

It's OK to discuss business during dinner, but don't go overboard and hand out documents for your guests to read while they're eating.

Related vocabulary: overdo it
Etymology: based on the literal meaning of go overboard (= to fall over a ship's side)

[TahlilGaran] English Idioms Dictionary ▲

go overboard
to do something in excess
The man went overboard with the birthday party preparations.

[TahlilGaran] English Idioms Dictionary ▲

go overboard
{v. phr.}, {informal} To act excitedly and without careful thinking.
John has gone off the deep end about owning a motorcycle.

Mike warned his roommate not to go off the deep end and get married.

Some girls go overboard for handsome movie and television actors.

[TahlilGaran] English Idioms Dictionary ▲