Tundra rhymes with:
alessandra, alexandra, bondra, calandra, cassandra, chandra, condra, d'alessandra, double-entendre, entendre, hendra, jayachandra, jindra, kendra, letendre, lysandra, mahindra, navin-chandra, pachysandra, sandra, satyandra, saundra, sciandra, sondra, vondra, wondra, zandra
Tundra sounds like:
tainter, tender, thunder, tinder, todhunter, tondreau