suboptimal

[ suhb-op-tuh-muh l ]

/ sʌbˈɒp tə məl /

being below an optimal level or standard.

Also sub·op·ti·mum

[suhb-op-tuh-muh m] /sʌbˈɒp tə məm/.

Origin of suboptimal

First recorded in 1930–35; sub- + optimal

And the long-term trend of growth—unsatisfying, sub-par, sub-optimal, and insufficient growth—is still intact.

The U.S. Economy Had a Hiccup, Not a Heart Attack, This Year |Daniel Gross |May 29, 2014 |DAILY BEAST
The patient declared cardiac dead has organs that are sub-optimal due to loss of blood flow to the organs.

A Tragedy Compounded: The Heart-Wrenching Case of Jahi McMath May Have Devastating Consequences to Organ Donation |Soumitra R. Eachempati, MD |January 4, 2014 |DAILY BEAST
There is no longer any room for those with sub-optimal looks.

Marty Feldman: Dead Cool |Simon Doonan |November 2, 2009 |DAILY BEAST