get behind

[get behind] {v.} 1. To go too slowly: be late; do something tooslowly.

The post office got behind in delivering Christmas mail.

Syn.: FALL BEHIND. Contrast: KEEP UP. 2. {informal} To support; help.

A club is much better if members get behind their leaders.

Wegot behind Mary to be class president.

Compare: BACK OF(3). 3.{informal} To explain; find out the reason for.

The police arequestioning many people to try and get behind the bank robbery.

Syn.:GET TO THE BOTTOM OF.