Hi you can try these # www.freelang.net/online/slovenian.php # www.lexilogos.com/english/slovenian_dictionary.htm

You may also want to try this two: http://www.spletni-slovar.com/slovensko-angleski (SLO-ENG) and http://www.spletni-slovar.com/anglesko-slovenski (ENG-SLO) versions. They are moderated but build up free to use by anyone. Everyone can contribute and in fact many Slovene people did. Is not professional but is worth to check because it can also include some dialects.