difficult or infrequent emptying of the bowels

muscle spasm

a sudden and painful tightening of the muscles, usually caused by cold or overwork, making movement difficult

muscle spasm

severity

severity

strict enforcement (of rules etc); harsh; severe conditions

strictness, exactness

the state, degree, of being tight; (a feeling, condition of) mental, emotional or nervous strain between people, groups, states etc

tightness

the arrangement of the threads in a cloth; the arrangement of the parts that make up something

characteristics of a surface