Answer:1.
unable to bend or be forced out of shape; not flexible.
"a seat of rigid orange plastic"
synonyms: stiff, hard, firm, inflexible, nonflexible, unbending, unyielding, inelastic; More
2.
not able to be changed or adapted.
"teachers are being asked to unlearn rigid rules for labeling children"
synonyms: fixed, set, firm, inflexible, unalterable, unchangeable, immutable, unvarying, invariable, hard and fast, cast-iron
"many dog owners establish a rigid routine for feeding"
Explanation: