F or Th Sound

This page is the CodyCross answer for the clue below from Canada, Group 1262, Puzzle 4 (Group of Seven).

Question is: F or Th Sound

and the answer is: FRICATIVE

Word Meaning:

FRICATIVE — (phonetics) Any of several speech sounds produced by air flowing through a constriction in the oral cavity and typically producing a sibilant, hissing, or buzzing quality; a fricative consonant.

Definitions from Wiktionary.