ぶち上あげる

ichidan verb, transitive verb

talk big; boast; make bold claims

Colloquial and emphatic; used when someone makes exaggerated, overconfident, or provocative statements, often in public or to an audience. The prefix ぶち- adds a sense of forcefulness or intensity.

• 彼かれは会かい議ぎで「来らい年ねんまでに売うり上あげを倍ばいにする」とぶち上あげた。

  He talked big at the meeting, saying he'd double sales by next year.