Definition of Firm

Adjective: firm (firmer,firmest) furm

Marked by firm determination or resolution; not shakable
"firm convictions"; "a firm mouth";
- steadfast, steady, stiff, unbendable, unfaltering, unshakable, unwavering, unshakeable
Not soft or yielding to pressure
"a firm mattress"; "the snow was firm underfoot";
- solid
With more than adequate force or sureness
"a firm grasp";
- strong
Not subject to revision or change
"a firm contract"; "a firm offer"
(of especially a person's physical features) not shaking or trembling
"his voice was firm and confident"; "a firm step"
Not liable to fluctuate or especially to fall
"stocks are still firm";
- steady, unfluctuating
Securely established
"holds a firm position as the country's leading poet"
Possessing the tone and resiliency of healthy tissue
"firm muscles"
Securely fixed in place
"the post was still firm after being hit by the car";
- fast, immobile
Unwavering in devotion to friend, vow or cause
"a firm ally";
- loyal, truehearted, fast

Noun: firm furm

The members of a business organization that owns or operates one or more establishments
"he worked for a brokerage firm";
- house, business firm

Adverb: firm furm

With resolute determination
"you must stand firm";
- firmly, steadfastly, unwaveringly

Verb: firm furm

Become taut or tauter
"Your muscles will firm when you exercise regularly";
- tauten
Make taut or tauter
- tauten