1. below the best or most favorable level; less than optimal

Examples

• The team’s performance was suboptimum due to lack of preparation.
• Working in suboptimum lighting conditions can strain your eyes.
• The plant grew poorly in the suboptimum soil conditions.
• Budget cuts resulted in suboptimum staffing levels.
• The software runs at suboptimum speed on older computers.
• Suboptimum weather delayed the outdoor event.