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Webster 1828 Edition

, a.

Wanting skill; destitute of readiness or dexterity in performance.

Destitute of practical knowledge.

unskilled ‎(comparative more unskilled, superlative most unskilled)

Of a person or workforce: not having a skill or technical training.
- 1918, W. B. Maxwell, chapter 22, in The Mirror and the Lamp:
  In the autumn there was a row at some cement works about the unskilled labour men. A union had just been started for them and all but a few joined. One of these blacklegs was laid for by a picket and knocked out of time.
Of a job: not requiring skill or training.
Of a made object: inexpertly made or showing a lack of skill.

of a person or workforce: not having a skill or technical training