go at it

1. To engage in or undertake something with great energy, enthusiasm, or vigor. I think you need a break from that assignment—you've been going at it for the last three hours! When John returned to teaching, he went at it with a renewed sense of purpose and excitement.

2. slang To engage in sexual intercourse. I can hear my neighbors going at it almost every night—it's so embarrassing!

go at it

to have sex One couple was going at it in the back seat of their car.

Related vocabulary: at it

Common Names:

Name	Pronounced	Usage
Thomas	TAHM-əs (English), TOM-əs (English), to-MAH (French), TO-mahs (German, Dutch), tho-MAHS (Greek)	English, French, German, Dutch, Swedish, Norwegian, Danish, Greek, Biblical, Biblical Latin, Biblica
Vilfred	-	Danish
Wine	-	Anglo-Saxon
Angelo	AHN-je-lo	Italian
Rudd	[rʌd]
ConcepciÓN	kawn-thep-THYON (Spanish), kawn-sep-SYON (Latin American Spanish)	Spanish