Synonyms and related words :
anticyclone, antitrades, apathy, blahs, blue devils, blues, boredom, calm, cold storage, dead calm, deathlike calm, dejection, depression, disinterest, dismals, dolefuls, dormancy, dumps, ennui, flat calm, gloom, horse latitudes, inactivity, indifference, intermission, interruption, latency, listlessness, lull, megrims, mopes, mulligrubs, mumps, oily calm, polar easterlies, prevailing westerlies, quiescence, quiescency, retardation, roaring forties, slump, stagnation, sulks, suspension, trade wind, trades, wind-equator, windlessness, yawn