- (intransitive, transitive, idiomatic) To accumulate, to pile up, to increase in stages.
2010 December 29, Chris Whyatt, “Chelsea 1-0 Bolton”, in BBC:
- Their first half was marred by the entire side playing too deep, completely unable to build up any form of decent possession once the ball left their bewildered defence.
Ever since the secretary left, the letters in my inbox have started to build up.
- (transitive, idiomatic) To strengthen.
They had to build up their fortress to protect against attack.
- (card games) In solitaire card games, to place a card over another card of lower value. (e.g., place 5♦ over 4♣)
- (card games): build down
- Misspelling of buildup.