Etymology
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erratum (n.)

"an error in writing or printing," 1580s, from Latin erratum (plural errata), neuter past participle of errare "to wander; to err" (see err).

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errata (n.)

"list of corrections attached to a printed book," 1580s, plural of erratum (q.v.).

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erratic (adj.)

late 14c., "wandering, moving," from Old French erratique "wandering, vagrant" (13c.) and directly from Latin erraticus "wandering, straying, roving," from erratum "an error, mistake, fault," past participle of errare "to wander; to err" (see err). Sense of "irregular, eccentric" is attested by 1841. The noun is from 1620s, of persons; 1849, of boulders. Related: Erratically.

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