below capacity
- underutilizedInsufficiently put to work
- slackAbsence of tautness
- idleWithout activity or purpose
- half-emptyContaining fifty percent
- unfilledNot occupied or completed
spare · vacant · underperforming · throttled · restrained · dormant · untapped · surplus · excess · room · headroom · bandwidth · reserve · potential · latent · holding back · coasting · running low
utilization level
below capacityat capacity
Holding all possible
over capacity · maxed out · overloaded · overburdened · saturated
operational fullness
below capacityfull
Maximum extent reached
filled to capacity · packed · overflowing · bursting at the seams · standing room only