Etymology: Middle English trippen, from Anglo-French treper, triper, of Germanic origin; akin to Old English treppan to tread — more at trap
Date: 14th century
intransitive verb1 a: to dance, skip, or caper with light quick steps b: to walk with light quick steps 2: to catch the foot against something so as to stumble 3: to make a mistake or false step (as in morality or accuracy) 4: to stumble in articulation when speaking 5: to make a journey 6 a: to actuate a mechanism b: to become operative 7 a: to get high on a psychedelic drug (as LSD) :turn on —often used with outbslang:freak 3btransitive verb1 a: to cause to stumble —often used with upb: to cause to fail :obstruct —often used with up 2: to detect in a misstep, fault, or blunder; also:expose —usually used with up 3archaic: to perform (as a dance) lightly or nimbly 4: to raise (an anchor) from the bottom so as to hang free 5 a: to pull (a yard) into a perpendicular position for lowering b: to hoist (a topmast) far enough to enable the fid to be withdrawn preparatory to housing or lowering 6: to release or operate (a mechanism) especially by releasing a catch or detent <trip the fire alarm>