This meaning describes parts of the body that cannot move or bend easily because they are stiff or hurt.
After the injury, my arm felt rigid.
His neck is rigid and hard to move.
This meaning is about people or rules that do not change easily. It shows firmness in ideas or decisions.
The teacher has a rigid rule for homework.
He is rigid and never changes his mind.
This use describes things that are tight and cannot move or change places.
The machine parts are rigid and cannot move.
The fence is rigid and does not shake.
This is a technical grammar meaning. It means words that do not change their form when used in sentences.
Some verbs have rigid forms and do not change.
Rigid words do not change their endings.
This meaning is used in philosophy and logic. It refers to words or things that must always mean the same in all cases.
A rigid designator means the same thing everywhere.
Rigid terms do not change their meaning.
This use describes a person's expression or attitude when it is very serious and not warm or relaxed.
He had a rigid face and did not smile.
She gave a rigid answer and left.
