decadelong

American

[dek-eyd-lawng, duh-keyd-lawng] / ˈdɛk eɪdˌlɔŋ, dəˈkeɪd lɔŋ /

Or decade-long

adjective

lasting for a decade.

After a decadelong study, the drug has finally been approved by the FDA.

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.

They say better economic fundamentals and falling interest rates are beginning to favor emerging markets and challenge a decadelong preference for U.S. assets.

From The Wall Street Journal • Apr. 9, 2026

The immediate fruit of his trip has been to reach two decadelong strategic partnerships.

From The Wall Street Journal • Mar. 29, 2026

That’s just to remind you of Pittsburgh’s decadelong carousel under center.

From Los Angeles Times • Jan. 17, 2026

It hasn’t been immune to the decadelong trouncing of value stocks by growth stocks.

From Barron's • Dec. 26, 2025

Now, if ever, is the time for action, with practically half of the period alloted for the prosecution of a decadelong Crusade already behind us.

From The Light of Divine Guidance (Volume 1) by Shoghi Effendi

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023