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
表裏【ひょうり】
front and back, inside and outside, two sides, both sides, duplicity, double-dealing, being two-faced
裏返し【うらがえし】
inside out, upside down, flip side, opposite, contrary, reverse
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