At the first opportunity

• Earliest time
• "Fearless minds climb ___ unto crowns": Shak
• Earliest date
• "Least said, ___ mended"
• How urgent tasks should be done
• Next available
• Least delayed
• How critical tasks should be performed
• Happening first

WordNet Word definitions in WordNet
adv. with the least delay; "the soonest I can arrive is 3 P.M." [syn: earliest ]