Containing or resembling chaff; full of worthless matter or teasing banter; insubstantial.
Derived from 'chaff' with the suffix '-y,' creating an adjective form. The metaphorical sense (worthless, insubstantial) comes from the literal comparison of grain husks to anything lacking real value or substance.
A chaffy argument is like separating wheat from chaff—there's a lot of talk but very little substance worth keeping, which is why 'chaffy' perfectly describes both literal grain remnants and empty, teasing conversation.
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