Dictionary.com
Thesaurus.com
Synonyms

optimal

American  
[op-tuh-muhl] / ˈɒp tə məl /

adjective

  1. optimum.


optimal British  
/ ˈɒptɪməl /

adjective

  1. another word for optimum

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • optimality noun
  • optimally adverb
  • superoptimal adjective

Etymology

Origin of optimal

First recorded in 1885–90; optim(um) + -al 1

Compare meaning

How does optimal compare to similar and commonly confused words? Explore the most common comparisons:

Explanation

Something that's optimal is the best or most favorable for a given situation. Flowers? Check. Chocolates? Check. Dinner reservation? Check. Sounds like you have the optimal conditions for a successful anniversary date. There's an implication with optimal that certain restrictions exist in a given situation, so that what is optimal isn't necessarily the ideal scenario — it's the best one given those limitations. For example, optimal population levels for a species are not the highest levels — instead they're the best levels that a particular environment can sustain. Often the word optimum is used interchangeably with optimal.

Keep Reading on Vocabulary.com

Vocabulary lists containing optimal

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.

The decision will help it “make more optimal economic decisions around how we best utilize our debt and cash portfolios to support the business,” CFO Kevan Parekh said.

From MarketWatch • May 1, 2026

We leave it to others to opine on whether the current split is optimal.

From Barron's • Apr. 3, 2026

“Small autonomous EVs are optimal in these environments and that is what Also is building from the ground up,” said Also President Chris Yu.

From The Wall Street Journal • Mar. 31, 2026

For people without cardiovascular disease, LDL-C levels below 100 mg/dL are considered optimal.

From Science Daily • Mar. 29, 2026

A mile and a quarter was War Admiral’s optimal distance.

From "Seabiscuit: An American Legend" by Laura Hillenbrand