suboptimal
Americanadjective
Usage
What does suboptimal mean? Suboptimal means below the optimal (best possible) level or standard. The words optimal and optimum both describe an ideal or perfect level, degree, result, or similar thing. Suboptimal means something has fallen short of that level. It is often used in phrases like suboptimal performance and suboptimal conditions. Example: The patient’s heart is performing at a suboptimal level.
Etymology
Origin of suboptimal
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“In the past, celebrity endorsements have often pushed people toward suboptimal financial products,” said Adam Rust, director of financial services at the Consumer Federation of America, an association of nonprofit consumer organizations.
From MarketWatch • Mar. 17, 2026
Italy's second-biggest bank decided to make the move "because we felt that to continue to stall was a suboptimal situation for both," he told analysts on a call.
From Barron's • Mar. 16, 2026
It’s just that sometimes it’s optimal to be suboptimal.
From The Wall Street Journal • Jan. 12, 2026
"Many older adults in suboptimal health often continue to make valuable contributions to those around them," Han said, "and they also may be the ones to especially benefit from being provided with opportunities to help."
From Science Daily • Dec. 19, 2025
Gat smiles when I say the word suboptimal and pats my shoulder.
From "We Were Liars" by E. Lockhart
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
