jibe
definition 2Pronunciation: /jīb/
verb
[no object] North American • informal
Be in accord; agree: the verdict does not jibe with the medical evidence
Origin
early 19th century: of unknown origin.
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Jeb jabbed Jon to show him that the set of the jib did not jibe with the mainsail. They jumped to work to prevent a massive mast disaster, worse even than an unplanned jibe. Of course, they both preferred a precise "Ready about; hard to lee!."
[Late WotD launch today...sorry.]