at_once
1. [ adverb ] without delay; with no time intervening
Synonyms: immediately now right_away instantly directly straightaway forthwith in_real_time
Examples:

"he answered immediately" "found an answer straightaway" "an official accused of dishonesty should be suspended forthwith" "Come here now!"

Related terms: immediate
2. [ adverb ] without delay or hesitation; with no time intervening
Synonyms: immediately now right_away directly instantly forthwith straightaway straight_off like_a_shot in_real_time
Examples:

"he answered immediately" "found an answer straightaway" "an official accused of dishonesty should be suspended forthwith" "Come here now!"

Related terms: immediate
3. [ adverb ] simultaneously
Synonyms: at_a_time at_one_time
Examples:

"he took three cookies at a time"

Similar spelling:   atonic
  atomic
  Atencio
  atomize
  atomise
  atomizer
  atomiser