deceit

noun5

1. •
   An act or practice intended to deceive; a trick.

   • The whole conversation was merely a deceit.
2. •
   An act of deceiving someone.

   • Upon his return he killed Eriphyle for her vanity and deceit of him and his father. — 1998
3. •
   The tort or fraudulent representation of a material fact made with knowledge of its falsity, or recklessly, or without reasonable grounds for believing its truth and with intent to induce reliance on it; the plaintiff justifiably relies on the deception, to his injury.
4. •
   The state of being deceitful or deceptive.

   • His mouth is full of cursing, and deceit, and fraud : vnder his tongue is mischiefe and vanitie. — 1611
5. •
   (rare) A group of lapwings.

   • Deceits of lapwings were preparing to migrate — 2025