to do or carry out (something); to carry (something) out
The computer can perform several tasks at once
to do (something) in a formal manner or according to prescribed ritual
The priest performed the marriage ceremony
to give a rendering of (a dramatic or musical piece)
to carry out an action or pattern of behaviour; to act or function
He performs well under pressure
to give a dramatic or musical performance
said of an investment: to yield profits
performable adj
performer noun
[Middle English performen from Anglo-French performer, alteration of Old French perfournir, from per- + fournir to complete]