#1 rigid s. [stiff] 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". wn
#2 rigid s. [strict] incapable of compromise or flexibility. wn
#3 rigid s. [inflexible, unbending] incapable of adapting or changing to meet circumstances; "a rigid disciplinarian"; "an inflexible law"; "an unbending will to dominate". wn
#4 rigid a. designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure. wn
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