late 13c., possibly from Old French fi, exclamation of disapproval (12c.), and reinforced by Old Norse fy or some other Scandinavian form; it's a general sound of disgust that seems to have developed independently in many languages. Fie-fie was a 19c. British jocular word for "improper," also, as a noun, "woman of tarnished reputation" [OED].
1. FIE is the world governing body of fencing.
2. People who had been crying fie about Mrs. Crawley, were silent.
3. Fie were newly discoered and two confirmed earlier findings.
4. Patients responded quickly to treatment starting at fie milligrams twice daily.
5. Seenty - fie ears showed complete agreement, and 46 ears showed disagreement.