1) Antepenultimate letters 2) Certain Greek letters 3) Followers for phis 4) Greek characters 5) Greek consonants 6) Greek letters 7) Hellenic consonants 8) Hellenic XXX 9) Letters after phis 10) Parts of some chapter names 11) Phi followers 12) Psi preceders 13) Sorority letters 14) Xxx abroad 15) XXX look-alikes
Found on
https://www.crosswordclues.com/clue/chis
Covert Human Intelligence Source (agent). An important source of secret intelligence. Agent operations are run by specially trained officers and can continue for long periods. (See: CHIS).
Found on
http://www.encyclo.co.uk/local/20790
No exact match found.
