1.
Alright!; Yes!; Let's do this!
A casual masculine exclamation of resolve, satisfaction, or psyching oneself up. Used the moment a decision is made, a task is started, or a victory is scored.
おっしゃ、行くぞ!
Alright, let's go!
Shortened from 仰る or よし combined into a single burst — etymology disputed. Lengthened forms おっしゃー / おっしゃあ are common.
Register
- Casual masculine speech. Women use it too, but less often, and more in private than in public.
- Inappropriate in business or formal settings — closer to English 'Yes!' fist-pump than 'Very well.'