PRONUNCIATION: (in-sin-yuh-EN-doh)

MEANING: noun: An assertion or hint that’s disparaging and suggestive.

ETYMOLOGY: A blend of insinuation + innuendo. Earliest documented use: 1884.

IN SIN U END - you'll go to Hell if you don't mend your ways

RINSIN UENDO - using a bidet

IN-SITU ENDO - the goal of endoscopy; examining something in place, without removing it