Green’s Dictionary of Slang

stealthing n.

the surreptitious removal by the male partner of a condom during intercourse against the express wishes of his female partner.

[UK]Guardian 22 May [Internet] ‘Stealthing’ is the pop culture name to describe a ‘new sex trend’ reported to be “on the rise”. It refers to the act of deliberately removing a condom during sex without your partner’s knowledge or consent.