Definitions: (adjective) A rigid idea, belief etc is unable to change. (adjective) Something that is rigid is stiff rather than flexible. It is difficult to bend or break.
Examples: (adjective) The ideas of Buddhism are far less rigid than those of other religions. For this reason, some argue that it is really a philosophy. (adjective) The bridge, being made from steel and concrete, was rigid and strong.
Synonyms: adjectives: stiff, solid. inflexible, strict.
Academic Word List Sublist and Group: 9 D