"forthwith" in the adverb sense
1. immediately, instantly, straightaway, straight off, directly, now, right away, at once, forthwith, like a shot
without delay or hesitation with no time intervening
"he answered immediately"
"found an answer straightaway"
"an official accused of dishonesty should be suspended forthwith"
"Come here now!"
Source: WordNet® (An amazing lexical database of English)
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