An apostrophe placed incorrectly before the final 's' of a plural noun (e.g. a kilo of potato's)
‘the Apostrophe Protection Society will have to work vigorously if it is going to have any effect on the greengrocer's apostrophe’
‘The greengrocers' apostrophe sneaks into everything from apple's to yam's.’
‘Why did they select the spelling with the greengrocer's apostrophe?’
‘This common misuse has been affectionately dubbed "the greengrocer's apostrophe" by specialists in English usage.’
‘Mallard's examples of rampant apostrophization not surprisingly include the much-maligned greengrocer's apostrophe("fresh apple's").’
‘Blog entries lean heavily on the greengrocer's apostrophe, with numerous photographs of offending signs.’
‘The greengrocer's apostrophe is commonest in handwritten signs and greengrocers are prominent among those who often have to write quick, informal notices for public display.’
‘The greengrocer's apostrophe is most often found on signs outside shops on goods for sale: "Tool's reduced"; in shop windows: "Sales assistant's wanted"; and on public noticeboards, especially in personal advertisements: "Lawn's mowed at competitive rates".’
Origin
1990s with allusion to use on handwritten signs advertising produce for sale.
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