1) Capp comment 2) Cluck of disapproval 3) Expression of vexation 4) Interjection of vexation 5) Mild exclamation of censure 6) Tongue-clicking sound 7) Tongue-clucking sound Found on https://www.crosswordclues.com/clue/tch
[chemotherapy] TCH is a chemotherapy regimen consisting of Taxol, Carboplatin and Herceptin which is used to treat breast cancer. ... Found on http://en.wikipedia.org/wiki/TCH_(chemotherapy)