allay • appease • balanced • calm • calm down • compose • composed • constant • cool • cradle • dispassionate • dulcify • dull • ease • equable • even • even-tempered • even out • fast • fiducial • firm • firm as Gibraltar • flat • gentle • hush • immutable • impassive • imperturbable • in equilibrium • inexcitable • lay • lull • moderate • mollify • pacify • patient • peaceable • peaceful • placid • pour balm into • predictable • quell • quiet • reliable • reposeful • rest • rock • rock to sleep • secure • serene • smooth • smooth down • smoothen • smooth over • sober • solid • soothe • sound • stabilize • stable • staunch • steadfast • steady • still • Stoic • stolid • subdue • substantial • tranquil • tranquilize • unflappable • unflinching • unmoved • unruffled • unshakable • unwavering • unyielding • well-balanced • well-founded • without nerves