immediately

instantly

Without any pause

• straightawayWithout pause or hesitation
• right awayWithout pause or delay
• at onceWithout any delay

forthwith · directly · promptly · without delay · this instant · right now · posthaste · pronto · stat · tout de suite

urgent

Needing immediate attention

• emergencySerious sudden danger
• criticalExpressing disapproval or importance
• pressingRequiring immediate attention

imperative · stat · code blue · ASAP · time-sensitive · life-or-death · crucial · dire · exigent · desperate

instinctive

Arising without conscious thought

• reflexiveDirected back at subject
• knee-jerkInstinctive and unconsidered
• automaticOperating without intervention

spontaneous · visceral · gut reaction · snap · involuntary · unthinking · impulsive · split-second · hair-trigger · reactive

adjacent

Directly next to

• next toImmediately alongside something
• directlyWithout intermediary steps
• contiguousSharing a common boundary

right beside · adjoining · abutting · bordering · nearest · closest · right here · at hand · within reach · nearby

following

Coming after another

• subsequentOccurring after something else
• ensuingFollowing as consequence
• nextImmediately following in sequence

thereafter · whereupon · the moment · as soon as · once

• time expressionsnow, today, soon, tomorrow, later
• time wordsminute, hour, day, now, soon
• adverbsquickly, slowly, very, really, now
• timingtiming, stopwatch, pause, early, countdown
• tricky spellingsaccommodate, acknowledge, acquaintance, acquire, bureau
• urgencyurgent, urgently, emergency, ASAP, stat