To cry out loudly or blurt something out suddenly and impulsively.
From Middle English, likely imitative in origin, blending 'blare' and 'tart' (meaning sharp). The word captures the sudden, loud nature of an outcry.
This is a regional dialect word still used in parts of England, showing how English preserves these wonderfully expressive verbs—'blart' conveys something that 'cry' or 'shout' just can't quite capture!
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