Stiff

dolorido

(of muscles, or parts of the body)

duro

(of an object, rigid, hard to bend, inflexible)

duro

(colloquial: harsh, severe)

firme

(of an object, rigid, hard to bend, inflexible)

firme

(of a person, formal in behavior, unrelaxed)

hirto

(of an object, rigid, hard to bend, inflexible)

inflexível

(of an object, rigid, hard to bend, inflexible)

inflexível

(figuratively: of policies and rules and their application and enforcement)

rijo

(of an object, rigid, hard to bend, inflexible)

rijo

(of muscles, or parts of the body)

rígido

(of an object, rigid, hard to bend, inflexible)

rígido

(figuratively: of policies and rules and their application and enforcement)

severo

(colloquial: harsh, severe)

sério

(of a person, formal in behavior, unrelaxed)