Stiff
Part of speech: adjective
Definition: Of an object, rigid, hard to bend, inflexible. Of policies and rules and their application and enforcement, inflexible. Of a person, formal in behavior, unrelaxed. Harsh, severe. Of muscles, or parts of the body, painful, as a result of excessive, or unaccustomed exercise. potent. dead, deceased Of a penis, erect
Part of speech: noun
Definition: An average person, usually male, of no particular distinction, skill, or education, often a working stiff or lucky stiff. A person who is deceived, as a mark or pigeon in a swindle. A cadaver, a dead person. A person who leaves (especially a restaurant) without paying the bill.
Part of speech: verb
Definition: To fail to pay that which one owes (implicitly or explicitly) to another, especially by departing hastily.
Example sentence: When you do a song new live on stage, it's kind of a bit weird until it gets worn in, you know, like oiled up a bit. It's still a little bit stiff until you really thrashed at it for a few weeks.
Inflexible
Part of speech: adjective
Definition: Not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.Not willing to change, e.g. one's opinion or habits; obstinate; stubborn; resolute; determined.
Example sentence: Where ambition can cover its enterprises, even to the person himself, under the appearance of principle, it is the most incurable and inflexible of passions.