stiff

Formal, unrelaxed, or lacking warmth in manner or appearance.

"He gave a rather stiff greeting."

Strong, potent, or severe; not mild or gentle.

"He ordered a stiff whisky."

A dead body, especially a human one.

"The detective found a stiff."

Not easily bent or changed in shape; firm and rigid.

"The cardboard was very stiff."

Painful or difficult to move, often after exertion or injury.

"My neck feels stiff after the gym."