rigid

Adjective

• fixed and unmoving
  • with eyes set in a fixed glassy stare
    
  • his bearded face already has a set hollow look- Connor Cruise O'Brien
    
  • a face rigid with pain
    

• designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure

• incapable of adapting or changing to meet circumstances
  • a rigid disciplinarian
    
  • an inflexible law
    
  • an unbending will to dominate
    

• incapable of compromise or flexibility

• incapable of or resistant to bending
  • a rigid strip of metal
    
  • a table made of rigid plastic
    
  • a palace guardsman stiff as a poker
    
  • stiff hair
    
  • a stiff neck
    

Related words

• Synonyms: 
  fixed , set , inflexible , unbending , strict , stiff