somethreedecades

noun
UK /sʌm θriː ˈdɛkeɪdz/
US /sʌm θri ˈdɛkeɪdz/

A period of about thirty years.

The old tree had been growing for somethreedecades before the children came to play under it.


OTHER MEANINGS

2. A long stretch of time that feels like thirty years.

Waiting for the bus felt like somethreedecades.

3. A way to say roughly thirty years without being exact.

Somethreedecades have passed since the town built its first library.

4. A span of three ten-year periods.

The museum's oldest painting is somethreedecades old.