firm

not liable to fluctuate or especially to fall

“stocks are still firm”

not soft or yielding to pressure

“a firm mattress”

not subject to revision or change

“a firm contract”

not shaking or trembling

“his voice was firm and confident”

possessing the tone and resiliency of healthy tissue

“firm muscles”

securely established

“holds a firm position as the country's leading poet”

the members of a business organization that owns or operates one or more establishments

with resolute determination

“we firmly believed it”

unwavering in devotion to friend or vow or cause

“a firm ally”

marked by firm determination or resolution; not shakable

“firm convictions”

securely fixed in place

“the post was still firm after being hit by the car”

strong and sure

“a firm grasp”