1) Abandon the norm 2) Be at variance with 3) Be out of line with 4) Break pattern 5) Change course 6) Degenerate 7) Depart 8) Deviant 9) Drift 10) Get sidetracked 11) Go astray 12) Go awry 13) Go off course 14) Miscreant 15) Move away 16) Not stick to the path 17) Oscillate about a norm 18) Pervert Found on https://www.crosswordclues.com/clue/deviate
• (v. t.) To cause to deviate. • (v. i.) To go out of the way; to turn aside from a course or a method; to stray or go astray; to err; to digress; to diverge; to vary. Found on http://thinkexist.com/dictionary/meaning/deviate/
De'vi·ate intransitive verb [ imperfect & past participle Deviated ; present participle & verbal noun Deviating .] [ Latin deviare to deviate; de + viare to go, travel, via way. See Viaduct .] To go ... Found on http://www.encyclo.co.uk/webster/D/53