Select the INCORRECTLY spelt word.

Mandatory Amnesia Corteous Frigidity

Corteous

The incorrectly spelled word is Corteous. The correct spelling is Courteous. Mandatory is an adjective that means required by law or custom. Amnesia is a noun that means loss of memory. Courteous is an adjective that means polite and considerate. Frigidity is a noun that means the state of being very cold or unfriendly.