How to say "crowded" in Japanese

• 賑やかにぎやかJLPT N5approx.Common
  na-adjectiveCovers 'crowded' as in lively and full of activity — a bustling street or busy shopping district. The nuance is positive, emphasizing energy and liveliness rather than discomfort.
  私の家いえはにぎやかな通とおりに面めんしています。↗

  My house faces a busy street.
• 満員まんいんJLPT N2approx.Common
  no-adjectiveCovers 'crowded' as in filled to capacity — a full bus, train, or theater with no space left. Its meaning is really 'full house; no vacancy', so it suits capacity rather than a lively atmosphere.
  バスは満員まんいんだった。↗

  The bus was filled to capacity.

Use 「賑やか」 for a place that is crowded in the sense of lively and bustling with people, and 満員 for a vehicle, venue or facility that is full to capacity, with no room left.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 賑やかにぎやかbustling
• 満員まんいんfull house
• 密みつdense
• 所狭いところせまいcrowded
• 混み混みこみこみcrowded
• 押すな押すなおすなおすなcrowded (e.g. with people)
• 所狭しとところせましとcrowded
• 稠密ちゅうみつdense
• 盛りだくさんもりだくさんmany
• いっぱいfull