Slipping is a technique used in boxing that is similar to bobbing

Bob and weave

In boxing bobbing moves the head laterally and beneath an incoming punch. As the opponent's punch arrives, the fighter bends the legs quickly and simultaneously shifts the body either slightly right or left...

. It is considered one of the four basic defensive strategies, along with blocking, holding

Grappling hold

A grappling hold is a grappling, wrestling, judo or other martial arts term for a specific grip that is applied to an opponent. Holds are principally used to control the opponent, and to advance in points or positioning...

, and clinch

Clinch

Clinch is to fix or secure by hammering down or flattening the end that protrudes or the act of fastening together in this way...

ing. It is performed by moving the head to either side so that the opponent's punches "slip" by the boxer. This technique is sometimes preferred to bobbing and weaving by taller boxers.