WordNet sense 1 (a farm building for housing horses or other livestock):

stalls, horse barn

WordNet sense 2 (lasting a long time without change):

lasting

WordNet sense 3 (not liable to fluctuate or especially to fall):

firm, steady

WordNet sense 4 (financially secure and safe):

sound

WordNet sense 5 (not reacting chemically):

unreactive

WordNet sense 6 (being in a state of proper balance or equilibrium):

balanced

WordNet sense 7 (showing little if any change):

static, unchanging