(じゃっかん)

じゃっかん
adverb
some; a few; slightly
1. some; a few; several
An unspecified small number or amount.
若干(じゃっかん)(めい)募集(ぼしゅう)
Recruiting a few people.
若干(じゃっかん)変更(へんこう)があった。
There were some changes.
2. somewhat; slightly
To a small degree.
若干(じゃっかん)(おく)れている。
Running slightly behind.

若干(じゃっかん) means some, a few, or slightly. It's a formal expression.

TWO MAIN USES:
1. Quantity (a few, some): 若干(じゃっかん)(めい) (a few people)
2. Degree (slightly): 若干(じゃっかん)(おく)い (somewhat slow)

COMMON PATTERNS:

  • 若干(じゃっかん)(めい): a few people (job postings)
  • 若干(じゃっかん)変更(へんこう): some changes
  • 若干(じゃっかん)余裕(よゆう): some margin/leeway
  • 若干(じゃっかん)(こと)なる: to differ slightly
  • 若干(じゃっかん)(たか)め: somewhat high

FORMALITY COMPARISON:

  • 若干(じゃっかん): formal, written/business
  • (すこ)し: neutral, general use
  • ちょっと: casual, spoken
  • いくらか: somewhat formal

COMMON CONTEXTS:

  • Job postings: 若干(じゃっかん)(めい)募集(ぼしゅう)
  • Business reports: 若干(じゃっかん)(おく)
  • Academic writing: 若干(じゃっかん)(こと)なる結果(けっか)

KANJI NOTE:
The kanji (じゃく) here means 'a little' (not 'young'), and (かん) means 'somewhat.'