Open to debate, or unworthy of it – ‘moot’ can mean either. At least that’s the argument I’m mooting.
The OED quotes the US supreme court ruling that ‘a moot question’ has ‘no bearing’ on an issue. The word was used to describe arguments over the disputed 2000 election. Photograph: Shawn Thew/EPA.
If the past tense of take is took, why shouldn’t the past tense of meet be moot? (“They moot by moonlight.”) Sadly it isn’t, but moot remains a lovely and versatile word, equally at home as noun, adjective or verb – and with contrasting meanings, depending on which side of the Atlantic you are using it.