Thermostat rhymes with:
clarostat, aerostat, carlstadt, clarostat, darmstadt, eberstadt, eizenstat, karstadt, lestat, ronstadt, urstadt, verhofstadt
Thermostat sounds like:
tarnished, thorniest, thronged, tornquist, tourniquet, tournquist, transact, transacted, transect, transected, transit, transited, treurnicht, trinket, trounced, truncate, truncated, turncoat, turnquest, turnquist