open up
• become more communicative or confiding.
• "neither one of them had opened up to me about their troubles"
• become present, available, or accessible.
• "a new and dramatic phase was opening up"
• begin shooting.
• "the enemy artillery had opened up"
• accelerate a motor vehicle by widening the throttle of its engine.
• "Sam took me back on the motorway to open her up"
• (of a player or team) create an advantage for one's side.
• "he opened up a lead of 14–8"