at strong form BrE AmE æt , weak form ət —The phrase at all 'in any degree, ever' is usually syllabified irregularly as ə ˈtɔːl in British English and sometimes as ə ˈtɔːl, ə ˈtɑːl in American English.
Meaning of AT in English
Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012