We've found 4 phrases for surd (0.1 seconds):

blue moon »    Something absurd.

off-the-wall »    Wildly unconventional; bizarre; absurd.

shake the pagoda tree »    To find a source of easy enrichment; to become absurdly rich in a short time.

touch%C3%A9 »    An acknowledgement of the success, appropriateness or superiority of an argument, sometimes used sarcastically to mock one's opponent's absurd logic.

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