Alcantar rhymes with:
canter, cantor, kanter, kantor, antar, banter, canter, cantor, enchanter, galanter, ganter, grantor, kanter, kantor, lanter, manter, panter, planter, santer, santor, tranter
Alcantar sounds like:
alcantara, alejandre, alejandro, aleksander, aleksandr, alessandra, alessandro, alexander, alexandra, alexandre, alexandria