n. 25B6; verb
the car crashed into a tree : SMASH INTO, collide with, be in collision with, hit, strike, ram, cannon into, plough into, meet head-on, run into; N. Amer. impact.
he crashed his car : SMASH, wreck; Brit. write off; Brit. informal prang; N. Amer. informal total.
waves crashed against the shore : DASH, batter, pound, lash, slam, be hurled.
thunder crashed overhead : BOOM, crack, roll, clap, explode, bang, blast, blare, resound, reverberate, rumble, thunder, echo.
(informal) his clothing company crashed : COLLAPSE, fold, fail, go under, go bankrupt, become insolvent, cease trading, go into receivership, go into liquidation, be wound up; informal go broke, go bust, go to the wall, go belly up.
25B6; noun
a crash on the motorway : ACCIDENT, collision, smash, road traffic accident, RTA; derailment; N. Amer. wreck; informal pile-up; Brit. informal prang, shunt.
a loud crash : BANG, smash, smack, crack, bump, thud, clatter, clunk, clonk, clang; report, detonation, explosion; noise, racket, clangour, din.
the crash of her company : COLLAPSE, failure, bankruptcy, insolvency, liquidation.
25B6; adjective a crash course : INTENSIVE, concentrated, rapid, short; accelerated-learning, total-immersion.