From Latin 'experiri' (to try out), from PIE *per- (to risk) — same root as 'experiment,' 'expert,' 'peril,' and 'pirate.'
Practical contact with and observation of facts or events; knowledge or skill acquired over time; to encounter or undergo an event or occurrence.
From Old French 'experience,' from Latin 'experientia' meaning 'a trial, proof, experiment, knowledge gained by trial,' from the present participle 'experiēns' of 'experīrī' meaning 'to try, to test,' composed of 'ex-' (out) + a lost verb *perīrī related to 'perītus' (experienced, skilled) and 'perīculum' (trial, danger). The PIE root is *per- meaning 'to try, to risk.' The word literally means 'to try out' or 'the result of trying things