What is the past tense of prone?

Answer 1

The past tense of "prone" is "pronounced." The word "prone" is an adjective that describes someone lying face down or inclined to do something. When referring to the past, you would use the past tense form "pronounced" to indicate that someone was in a prone position at a specific point in time.

Answer 2

The word "prone" is an adjective and so doesn't have a past tense. Only verbs have a past tense.

Answer 3

The past tense of "prone" is "pronated."