slentando
adverb (or adjective)
slen·tan·do
slen‧ˈtän(ˌ)dō
: gradually decreasing in tempo —used as a direction in music
Word History
Etymology
Italian, from verbal of slentare to slow down, from s- away, off (from Latin dis- or ex-) + lento slow, from Latin lentus pliant, tough, slow