firm in WordNet English dictionary

1. the members of a business organization that owns or operates one or more establishments
   "he worked for a brokerage house"
   firm  house  business firm 
   

1. unwavering in devotion to friend or vow or cause
   "a firm ally"; "loyal supporters"; "the true-hearted soldier...of Tippecanoe"- Campaign song for William Henry Harrison; "fast friends"
   firm  loyal  truehearted  fast 
   
2. securely fixed in place
   "the post was still firm after being hit by the car"
   fast  firm  immobile 
   
3. strong and sure
   "a firm grasp"; "gave a strong pull on the rope"
   firm  strong 
   
4. not soft or yielding to pressure
   "a firm mattress"; "the snow was firm underfoot"; "solid ground"
   firm  solid 
   
5. possessing the tone and resiliency of healthy tissue
   "firm muscles"
   firm 
   
6. marked by firm determination or resolution; not shakable
   "firm convictions"; "a firm mouth"; "steadfast resolve"; "a man of unbendable perseverence"; "unwavering loyalty"
   firm  steadfast  steady  stiff  unbendable  unfaltering  unshakable  unwavering 
   
7. securely established
   "holds a firm position as the country's leading poet"
   firm 
   
8. not subject to revision or change
   "a firm contract"; "a firm offer"
   firm 
   
9. (of especially a person's physical features) not shaking or trembling
   "his voice was firm and confident"; "a firm step"
   firm 
   
10. not liable to fluctuate or especially to fall
    "stocks are still firm"
    firm  steady  unfluctuating 
    

1. become taut or tauter
   "Your muscles will firm when you exercise regularly"; "the rope tautened"
   tauten  firm 
   
2. make taut or tauter
   "tauten a rope"
   tauten  firm 
   

1. with resolute determination
   "we firmly believed it"; "you must stand firm"
   firm  firmly  steadfastly  unwaveringly  firm  firmly  steadfastly  unwaveringly