Characterized by drifting or tending to drift; moving in an aimless or wandering way.
Formed by adding the suffix '-y' (meaning 'having the quality of') to 'drift' (Old Norse 'drifa'). This adjectival form became common in the 19th century to describe things prone to drifting.
The word 'drifty' perfectly captures that feeling of snow creating unpredictable patterns—meteorologists and engineers study drifty conditions because they're actually predictable using fluid dynamics.
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