Words related to stiff
c. 1400, "costiveness, bowel condition in which evacuations are obstructed or difficult" (more fully, constipacioun of þe wombe), from Late Latin constipationem (nominative constipatio), noun of state from past-participle stem of Latin constipare "to press or crowd together," from assimilated form of com- "together" (see con-) + stipare "to cram, pack" (see stiff (adj.)).
"action of blocking or stopping up," especially, in medicine, "constipation," 1590s, from Latin obstipationem (nominative obstipatio), noun of action from past-participle stem of *obstipare "action of blocking or stopping up," from ob "in front of; in the way of" (see ob-) + stipare "to press together, to pack" (see stiff (adj.)).