[French, learned, savant, from Old French, present participle of savoir, to know, from Vulgar Latin sapēre, from Latin sapere, to be wise; see sep- in Indo-European roots.]
1719, from Fr. savant "a learned man," noun use of adj. savant "learned, knowing," former prp. of savoir "to know," from O.Fr., from V.L. *sapere, from L. sapere "be wise" (see sapient).