No longer stuck or attached; freed from being firmly fixed or unable to move.
From 'un-' (reversal prefix) + 'stuck' (past tense of stick). The compound formation shows how English easily creates new meanings by combining prefixes with existing words.
The phrase 'come unstuck' means to fail or fall apart—it's a metaphor suggesting that when plans or things come unstuck, they lose their cohesion, just like actual glue failing!
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