rigid

rigid is an   Adverb

Definition:

[1] Firm; stiff; unyielding; not pliant; not flexible. Upright beams innumerable Of rigid spears. Milton.

[2] Hence, not lax or indulgent; severe; inflexible; strict; as, a rigid father or master; rigid discipline; rigid criticism; a rigid sentence. The more rigid order of principles in religion and government. Hawthorne.

Synonyms: