Synonyms of the word

no-show

• n. (idiomatic) An absence; somebody who doesn't show up or a failure to make a schedule appearance, especially…
• v. To fail to show up for something.

guest

• n. A recipient of hospitality, specifically someone staying by invitation at the house of another.
• n. A patron or customer in a hotel etc.
• n. An invited visitor or performer to an institution or to a broadcast.
• n. (zoology) Any insect that lives in the nest of another without compulsion and usually not as a parasite.
• n. (zoology) An inquiline.
• v. (intransitive) to appear as a guest, especially on a broadcast.
• v. (intransitive) as a musician, to play as a guest, providing an instrument that a band/orchestra does not…
• v. (transitive, obsolete) To receive or entertain hospitably.

nonattender

• n. One who does not attend (make oneself present at a ceremony etc.).

offender

• n. One who gives or causes offense.
• n. A person who commits an offense against the law, a lawbreaker.

truant

• adj. Absent without permission, especially from school.
• adj. Wandering from business or duty; straying; loitering; idle, and shirking duty.
• n. One who is absent without permission, especially from school.
• v. (intransitive) To play truant.
• v. (transitive) To idle away; to waste.
• v. To idle away time.

wrongdoer

• n. Someone who does wrong, whether morally, ethically, or in contravention of a law.