裏付け【うらづけ】
support (e.g. for an argument), backing, proof, evidence, corroboration, substantiation, guarantee, security
裏切る【うらぎる】
to betray, to turn traitor to, to double-cross
裏返し【うらがえし】
inside out, upside down, flip side, opposite, contrary, reverse
表裏【ひょうり】
front and back, inside and outside, two sides, both sides, duplicity, double-dealing, being two-faced
裏口【うらぐち】
backdoor, rear entrance, rear exit, unauthorized, illicit, illegal
裏表【うらおもて】
back and front, inside and outside, both sides, inside out (e.g. clothing), double-dealing, two faces (cf. two-faced), outward appearance and actual condition, inner workings
裏通り【うらどおり】
side street (often parallel to a main street), back street, alley, alleyway
裏返す【うらがえす】
to turn inside out, to turn the other way, to turn (something) over
裏道【うらみち】
back lane, byway, back street, unfair means, dishonest means