ILL FOUNDED

Albanian

i pabazë (ungrounded). (various references)

Bulgarian 

необоснован (baseless, causeless, idle, invalid, precarious, slender, unbacked, unfounded, unsound). (various references)

Hebrew 

לא מבוסס, בלתי מבוסס (causeless, invalid). (various references)

Hungarian

téves (erroneous, false, improper, mistaken), alaptalan (fictitious, gratuitous, it's in the air). (various references)

Pig Latin

illay oundedfay.(various references)

Romanian

nefondat (groundless, idle, ungrounded), fãrã temei (groundless, idle). (various references)

Russian 

необоснованный (causeless, unfounded, ungrounded). (various references)

Serbo-Croatian

loše zasnovan. (various references)

Spanish

infundado (groundless, unfounded), mal fundado. (various references)

Swedish

ogrundad (baseless, groundless), grundlös (groundless, unfounded). (various references)

Turkish

gerçeğe dayanmayan, asılsız (baseless, captious, chimerical, delusive, footless, groundless, insubstantial, out of whole cloth, rootless, tinsel, unfounded, ungrounded, untruthful, without any foundation, without foundation). (various references)

Ukrainian

необгрунтований (baseless, causeless, groundless, invalid, precarious, undefended, unfounded, ungrounded, unwarranted), безпідставний (baseless, causeless, footless, insupportable, rootless). (various references)