Unsnarl comes from un- ('reversal') + snarl ('to tangle'), a frequentative of Middle English snare, from Old English sneare ('noose, snare'). In current use it is a verb meaning "to free from tangles or confusion". That sense is explained by the older material without requiring a speculative semantic step: the inherited or borrowed base supplies the field of meaning, while the English formation fixes its modern role. The prefix un- is reversative here, marking an undoing or release rather than mere negation. The surface form is compositional: its joined elements remain visible in the modern word. A frequentative element in the history points to repeated, habitual, or intensified action. The historical chain includes Old English un- and Old English sneare. Related English forms include snarl. Derived forms include unsnarled and unsnarling. As a result, the modern word is best read as a negative, privative, or reversative formation built on a historically older base.