summerlong en · ADJ
Etymology
From summer + -long.
Meanings
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(not-comparable) Extending throughout a summer
“We don’t want it to be a summerlong event, though,” said Corrigan O’Donohue, a lieutenant with the Royal Oak Police Department.
2007 August 3, Mary M. Chapman, “Growing Pains for a Yearly Tribute to Classic American Cars”, in New York Times: