Urgency (noun)

1. The quality or state of being pressing, pressing importance.
2. The quality of demanding immediate action or attention.

Origin:

Late middle english: from old french urgence, from latin urgentia, from urgēre 'press, urge', from uro 'i press, urge'.

Examples:

1. There was a sense of urgency in his voice.
2. The urgency of the situation required swift action.
3. The doctor explained the urgency of my son's condition.
4. The urgency of the matter prompted her to act.
5. The urgency of the project demands our full attention.