Common words:
* Ant: The insect.
* Aunt: A sister of one's parent.
* Plant: A living organism that typically grows in soil.
* Grant: To give or allow something.
* Want: To desire something.
* Frant: An archaic term for a wild or unruly person.
* Cant: A hypocritical or insincere way of talking.
Less common words:
* Anti: Short for "antibody."
* Antagonist: A person who actively opposes or is hostile to someone or something.
* Antecedent: A thing or event that existed or happened before another.
* Anticipate: To expect or predict something.
* Antidote: A remedy for a poison or disease.
* Anthem: A song or hymn of praise or patriotism.
* Anthill: A mound of earth built by ants.
* Antler: A bony, branched outgrowth from the head of a deer, elk, or moose.
* Anteroom: A small room that leads into a larger room.
* Antonym: A word with the opposite meaning of another word.
Words from other languages:
* Tant: A French word meaning "so much."
* Avant: A French word meaning "before" or "forward."
* Kant: A German philosopher.
* Daunt: To make someone feel less confident.
This list is not exhaustive, but it gives you a good starting point for finding words with "ant" in them.