accorder Definition of the French term accorder in music: to tune to match to grant, to give Language French Related terms French musical terms related to accorder: accord – chord, harmony...accordeur – tuneraccordez – tune (imperative)accordoir – tuning hammer, tuning key...cheville – tuning pin, tuning pegd'accord – in tune...descendez – lower...détonner – sing out of tune, go out of tune...diapason – tuning fork...