
1) Affiiated 2) Agreed 3) Aligned oneself 4) Aligned with 5) Allied 6) Allied oneself 7) Allied with 8) Backed a cause 9) Blind or broad attachment 10) Chose a team 11) Ending with blind or broad 12) Eschewed impartiality 13) Exhibited partisanship 14) Joined a faction 15) Joined forces 16) Like a die
Found on
https://www.crosswordclues.com/clue/sided

• (a.) Having (such or so many) sides; -- used in composition; as, one-sided; many-sided. • (imp. & p. p.) of Side
Found on
http://thinkexist.com/dictionary/meaning/sided/
Sid'ed adjective Having (such or so many) sides; -- used in composition; as, one-
sided ; many-
sided .
Found on
http://www.encyclo.co.uk/webster/S/98
No exact match found.