Proto-IE: *kew(ǝ)dh-
Meaning: to hide
Old Indian: kuhara- m. `cavity, hollow, hole', kuhaka- m. `cheat, juggler, impostor', kuhū́- f. `new moon'
Old Greek: kéu̯thō, keu̯thánō, inf. künthánein Hsch., aor. kêu̯sai̯, kǘthe (Hom.), kekǘthōsi (Hom.), pf. kékeu̯tha `verbergen, verhehlen; verborgen sein'; kêu̯thos n., keu̯thmṓn, -ō̂nes m., keu̯thmó-s m. `Versteck, Höhle, Tiefe'
Celtic: *kūd- > Cymr cudd `Verbergung', cuddio `verbergen', Corn cuthe `verbergen', Bret cuzaff `verbergen'
Russ. meaning: скрывать
References: WP II 546 f
