Unpronounceable
[ʌnprə'naʊnsəb(ə)l] or ['ʌnprə'naʊnsəbl]
Definition
(adj.) very difficult to pronounce correctly; 'an unpronounceable foreign word'; 'unutterable consonant clusters' .
(adj.) impossible or difficult to pronounce correctly .
Typist: Michael--From WordNet
Definition
adj. difficult to pronounce: not fit to be mentioned.—adj. Unpronounced′ not pronounced.
Typist: Marcus