to fulfil, to fulfill, to meet, to deliver (e.g., requirements, prerequisites, promise, vow); to achieve, to accomplish, to carry out, to perform, to complete, to discharge, to fulfil (e.g., one's duties, responsibilities); to turn a certain age (may be succeeded by los); to serve (e.g., a prison sentence, an allotted time of punishment); to comply
“No prometas lo que no puedas cumplir.” — Do not promise what you cannot deliver.
Inherited from Old Spanish cumplir~complir, from Vulgar Latin *complīre, from Latin complēre. The retention of /pl/ is unusual and perhaps reflects some form of conservative tendency. Cf. henchir < *implīre < implēre for the more usual outcome. Compare also Portuguese cumprir, which shows a similar lack of palatalization.