This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Compelling immediate action or attention; pressing.

adj. Insistent or importunate: the urgent words "Hurry! Hurry!”

adj. Conveying a sense of pressing importance: an urgent message.

adj. Requiring immediate attention.

adj. Urging; pressing; besetting; plying, with importunity; calling for immediate attention; instantly important.

Having the character of urging, pressing, or constraining.

adj. compelling immediate action

"The FAO called the meeting to discuss what it termed urgent and concrete measures to address the humanitarian crisis in the Horn of Africa."

imperative   

exigent   

urge   

urgently    urgency   

urging    pressing    besetting    importunate    instant    cogent    imperative    crying    clamant    exigent   

convergent    detergent    divergent    emergent    insurgent    resurgent   

insistent    immediate    desperate    frantic    anxious    excite    intimate