An untapped supply or source of something has not yet been used.

What is untapped potential?

Untapped Potential is redefining work-life success by connecting forward-thinking businesses with untapped talent through its Flexreturn™ program. UP's innovative Flexreturn™ services remove barriers for high caliber women, while returning value to business.

What does untapped mean?

1 : not subjected to tapping an untapped keg. 2 : not drawn upon or utilized as yet untapped markets.