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

Head Start is required to serve at least two meals per day to the young children who attend these schools, as well as offer speech therapy and other kinds of developmental support and health services when needed. — Alexander Thim, The Conversation, 29 Sep. 2026

Those capabilities, though, lie farther (but presumably not too far) down Starship’s developmental timeline. — Josh Dinner, Space.com, 26 Sep. 2026

This can result in learning disorders, developmental defects, and other long-term health problems. — Michele Laufik, Martha Stewart, 25 Sep. 2026

Warmth, responsiveness, and flexibility support a child’s developmental growth, while parental patterns of inconsistency and overindulgence can spoil kids. — Liz Regalia, Parents, 24 Sep. 2026