Synonyms of developmental

developmental

adjective

dē-ˌve-ləp-ˈmen-tᵊl 

as in experimental

made or done as an experiment

developmental weaponry that is classified as top secret by the Pentagon

Synonyms & Similar Words

• experimental
• investigative
• trial
• pilot
• preliminary
• exploratory
• preparatory
• temporary
• hypothetical
• speculative
• theoretical
• tentative
• probative
• provisional
• conjectural
• untried
• unproven
• untested
• unproved

Antonyms & Near Antonyms

• standard
• established
• advanced
• accepted
• developed
• final
• permanent
• tested
• decisive
• definitive
• proved
• conclusive
• tried
• proven

Example Sentences

Recent Examples of developmental

Experts say forever chemicals can have a major impact on your health, compromising immunity, decreasing fertility, causing developmental delays in children and increasing the risk of certain kinds of cancers. — Wcco Staff, CBS News, 14 Oct. 2026

Tasca tells Robb Report that the original developmental vines were obtained through a nursery that sold them only for trial purposes, but then the experiment became part of a larger initiative. — Mike Desimone, Robb Report, 11 Oct. 2026

The family helplessly searched for the 20-year-old, who struggled with developmental delays and whose speech was at times difficult to understand. — Julia Coin, Charlotte Observer, 9 Oct. 2026

The procession is put on by Passion Works, a local art studio run by people with and without developmental differences. — Michelle Mastro, Midwest Living, 9 Oct. 2026