transitive verb

1. to put together (parts) so as to form a whole : combine compound ingredients
… a thick sauce compounded of chilies, garlic, and ginger. —Andy Birsh
2. to form by combining parts compound a medicine
3. a: to settle amicably : adjust by agreement
b: to agree for a consideration not to prosecute (an offense) compound a felony
4. a: to pay (interest) on both the accrued interest and the principal
b: to add to : augment • compound an error
… had several other medical complications that compounded his condition. —Jeffrey S. Hollis

intransitive verb

1. to become joined in a compound
2. to come to terms of agreement compounded with the enemy for peace
— compoundable play \käm-ˈpau̇n-də-bəl, kəm-ˈpau̇n-, ˈkäm-ˌpau̇n-\ adjective
— compounder noun


source: merriam-webster dictionary