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Related to fash: fash pack
worry; trouble; bother
to trouble; bother; annoy
[C16: from obsolete French fascher to annoy, ultimately from Latin fastīdium disgust, aversion]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Past participle: fashed
Collins English Verb Tables © HarperCollins Publishers 2011