suboptimal

[ suhb-op-tuh-muh l ]
/ sʌbˈɒp tə məl /

adjective

being below an optimal level or standard.
Also sub·op·ti·mum [suhb-op-tuh-muh m] /sʌbˈɒp tə məm/.

Origin of suboptimal

First recorded in 1930–35; sub- + optimal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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