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early 13c., "rough, jagged" (figurative); 1570s, of landscape, "rough, rugged, stumpy;" 1610s, of persons, "gaunt and wasted, lean, thin, bony;" see scrag + -y (2), and cf. scroggy, scraggly. In Scottish, scranky. Related: Scragginess.
Gaunt and wasted; lean; bony: snapshot of a scraggy Sindona as an apparent captive (1611+)