corroborate \kuh-ROB-uh-rayt\ transitive verb:
to strengthen or make certain with other evidence.
Example: The two corroborated their arguments to win the debate.
Corroborate comes from the Latin word corroboratus the past participle of the verb, corroborare, “to strengthen,” from com-, “with” + roborare, “to strengthen.” Roboare is also the cognate for robust.
Source: Dictionary.com
double entendre \DUHB-uh | ahn-TAHN-druh\ foreign phrase:
1. double meaning.
2. a word or expression used in a given context so that it can be understood in two ways, esp. when one meaning is risqué.
Example: Dave told me a joke that was quite the double entendre.
Double entendre comes from the French words double, “double” + entendre, “to mean, understand.”
Source: Wiktionary