Caveat

ˈkæviˌæt

noun

a warning or caution

The word 'caveat' comes from Latin, meaning 'let him beware'. It is commonly used in legal contexts to denote a stipulation or condition that needs to be considered.

We will continue our investigation with, however, the following caveat: As with every report preceding this one, we must address the Lord Leto’s prescience.

Frank Herbert

God Emperor of Dune