-able BrE AmE əb ə l —In general, this suffix is stress-neutral (in ˈ terpretable, de ˈ sirable, com ˈ municable). There are, however, some important exceptions ( ˈ admirable, ˈ preferable, ˈ reputable) , and speakers disagree for some words (applicable, comparable, formidable, hospitable, irrevocable, lamentable, transferable) — see individual entries.
-ABLE
Meaning of -ABLE in English
Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012