RIGID
ADJECTIVES
► CAST-IRON hard, insensible to fatigue; rigid, stern, unbending; inflexible, unyielding → 1830
► RIGENT stiff, rigid → 1440 obs.
► RIGESCENT tending to be or becoming rigid or stiff → 1848
► UNBOWSOME unbending, unyielding, stiff, rigid → 1818 Sc. & Eng. dial.
NOUNS – PERSON
► POKER a person with a rigid or stiff bearing or manner → 1812 obs.
VERBS
► HAVE A STICK UP ONE’S ASS to be extremely rigid or conventional; to be inflexible, strict, or strait-laced → 1967
Lexicophilia 