1. the quality or state of being essential; the fact of being absolutely necessary or indispensable

Examples

• The essentialness of clean water to human survival cannot be overstated.
• She emphasized the essentialness of regular exercise for maintaining good health.
• The essentialness of communication skills in the workplace is widely recognized.
• We debated the essentialness of each requirement before finalizing the project plan.
• The essentialness of education became even more apparent during the pandemic.
• He questioned the essentialness of some of the expensive equipment.