Word of the day

equilibrium noun 1 the equilibrium of the economy balance, symmetry, equipoise, parity, equality; stability. antonym imbalance. 2 his equilibrium was never shaken composure, calm, equanimity, sangfroid; level-headedness, coolheadedness, imperturbability, poise, presence of mind; self-possession, self-command; impassivity, placidity, tranquility, serenity; informal cool. antonym nervousness, agitation.