an act or instance of departing

the time of departure; a hasty departure.

divergence or deviation, as from a standard, rule, etc.

a departure from accepted teaching methods.

Navigation .

the distance due east or west traveled by a vessel or aircraft.

point of departure.

Surveying . the length of the projection, on the east-west reference line, of a survey line.

Archaic . death.

noun

arrival , coming , entrance , abidance , continuation , keeping , stay

noun

abandonment , adieu , bow out * , cong , decampment , desertion , egress , egression , embarkation , emigration , escape , evacuation , exit , exodus , expatriation , farewell , flight , getaway * , going , going away , goodbye * , hegira , migration , parting , passage , powder * , quitting , recession , removal , retirement , retreat , sailing , separation , setting forth , setting out , stampede , start , takeoff , taking leave , taking off , vacation , vanishing act , walkout , withdrawal , withdrawing , aberration , branching off , branching out , change , declination , deflection , difference , digression , divergence , diversion , innovation , in thing , last word * , latest thing * , new wrinkle , novelty , rambling , shift , straying , turning , variance , variation , veering , wandering , divergency , death , deviation , goodbye , twist