subPronunciation: /sʌb/ informalTranslate sub | into Spanish Definition of sub noun 1a submarine: the yachtsman claimed his boat had been sunk by a sub North Americanshort for submarine sandwich. 2British a subscription: the annual sub for the golf club will be £200 3a substitute, especially in a sporting team: the team pulled back with a goal from sub Chris Malkin 4British a subeditor: the chief sub would be responsible for the look of the paper 5British an advance or loan against expected income: ‘I’ve got no money.’ ‘Want a sub?’ verb (subs, subbing, subbed) [with object] 1replace or be replaced; substitute:he got a lot of applause when he was subbed [no object]:he subbed for Armstrong at some gigs 2British lend or advance a sum to (someone) against expected income:who’ll sub me till Thursday? 3subedit:his copy was mercilessly subbed and rewrittensub in other Oxford dictionaries Definition of sub in the US English dictionary