早々(そうそう)に

そうそうに
adverb
early on; promptly; right away; without delay
time-general
1. early on; right away; promptly
Doing something soon after a certain point in time, without delay or lingering. Often implies leaving or finishing sooner than might be expected.
早々(そうそう)に帰(かえ)った。
I left early.
The meeting was wrapped up promptly.
I caught a cold right at the start of the new year, so I got off to a bad start.

Often follows a time expression or event to mean "right at the beginning of" or "soon after": 新年(しんねん)早々(そうそう) (right at the start of the new year), 到着(とうちゃく)早々(そうそう) (right after arriving). In this suffix-like usage, に is often omitted.

Common collocations

Usage

As a standalone adverb (早々(そうそう)に), it means "promptly, without lingering." As a suffix attached to nouns (X早々(そうそう)), it means "right at the start of X" or "soon after X." Note the different reading: 早々(はやばや)と means "early, well ahead of time" (早々(はやばや)と席(せき)を取(と)る, to grab seats well in advance).