işaret verilmeden başlamak

listen to the pronunciation of işaret verilmeden başlamak
Турецкий язык - Английский Язык
jump the gun
to trade securities based on information that is not yet public; to trade on inside information
to act or begin too soon or without due caution

Don't you think it is jumping the gun to report this without verifying it?.

to begin a race too soon, before the starting gun goes off
start too soon