Adultish is Substantial's 5th studio album. The LP explores the world of a self-described "grown-up with more growing to do" over soul/jazz sample-based production and live instrumentation. Guests include Shing02, Uyama Hiroto, Mega Ran, Marcus D, Stephanie Gayle, T.Lucas, Tamera Wellons, MLLN, Javier Starks, Malcolm Jackson, DJ RBI, DJ Jav, Matthew Shell, and Black Root.

Adultish is also available on all digital streaming platforms and Demu Pro. Also, each physical version of Adultish includes the instrumentals.