1) Assign 2) Assign to a lower position 3) Break 4) Bump 5) Bump at the office 6) Bump down 7) Bump down but keep on 8) Bust 9) Bust to private 10) Bust, militarily 11) Bust, so to speak 12) Consign 13) Delegate 14) Depute 15) Designate 16) Downgrade 17) Drop down 18) Drop in rank 19) Grade down 20) Kick downstairs Found on https://www.crosswordclues.com/clue/demote
De·mote' transitive verb [ imperfect & past participle Demoted ; present participle & verbal noun Demoting .] [ Prefix de- + mote , as in promote ; confer Latin demovere to remove.] To reduce to a lower grad... Found on http://www.encyclo.co.uk/webster/D/34
bumpverb assign to a lower position; reduce in rank; `She was demoted because she always speaks up`; `He was broken down to Sergeant` Found on https://www.encyclo.co.uk/local/20974