Answer: stiffer

AnswerCrossword Clue
stifferSTIFF, not easily bent
stiffer(of a person or part of the body) Unable to move easily and without pain
stiffer(of an alcoholic drink) Strong
stifferViscous; thick
stifferA card that is the only one of its suit in a hand
stifferHaving a specified unpleasant feeling to an extreme extent
stifferFull of
stiffer(of a wind) Blowing strongly
stiffer(of a person or their manner) Not relaxed or friendly; constrained
STIFFERLess limber
stifferNot easily bent or changed in shape; rigid
stifferSevere or strong
stifferNot moving as freely as is usual or desirable; difficult to turn or operate
stifferRequiring strength or effort; difficult
STIFFERMore severe
STIFFERMore formal
STIFFERMore rigid.