A terrifying and dangerous creature. / A bizarre or whimsical creature. / A cruel, heartless, or antisocial person, especially a criminal. / (medicine, archaic) A severely deformed person.

(informal) Very large; worthy of a monster. / (informal) Great; very good; excellent.

To make into a monster; to categorise as a monster; to demonise. / To behave as a monster to; to terrorise. / (chiefly Australia) To harass.

plural of monster

Third-person singular simple present indicative form of monster

simple past tense and past participle of monster

present participle of monster

The act of one who monsters (in any sense).

To make something or someone into a monster. / To give someone a very bad reputation; demonize, vilify.

present participle of monsterize