I contest that word.Rules wrote:Types of words which cannot be used are abbreviations, prefixes and suffixes. Words that require a hyphen or an apostrophe cannot be played. Words that are spelled with a capital letter cannot be used.
Generally speaking in an English-language game of Scrabble, foreign words cannot be placed on the Scrabble board. If those words appear in a standard English dictionary, then the word is allowable. This is because the word is spoken often enough by native English-speakers that it has become a part of the English language.