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

The aging bomber fleet requires extensive maintenance, and only a small number of aircraft are configured to support developmental flight testing. — Kaif Shaikh, Interesting Engineering, 13 July 2026

This suggests a genetic component alongside some developmental randomness. — Quanta Magazine, 13 July 2026

Sharpening his strike-throwing across the board will be a developmental key for Lord, who might always struggle to repeat because of his length, but does move well with a solid operation overall. — Jeff Sanders, San Diego Union-Tribune, 12 July 2026

With limited access to academic and developmental support, the risk factors are plentiful. — Annalisa Merelli, STAT, 10 July 2026