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suboptimal

[suhb-op-tuh-muh l] /sʌbˈɒp tə məl/
adjective
1.
being below an optimal level or standard.
Also, suboptimum
[suhb-op-tuh-muh m] /sʌbˈɒp tə məm/ (Show IPA)
.
Origin
1930-1935
1930-35; sub- + optimal
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for sub-optimal

suboptimal

adj.

also sub-optimal, 1901, from sub- + optimal. Related: Suboptimally.

Online Etymology Dictionary, © 2010 Douglas Harper
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