みっちり

みっちり
adverb
thoroughly; intensively; rigorously
1. thoroughly; intensively; rigorously
Describes doing something with great thoroughness and intensity, leaving no gaps or shortcuts. Commonly used for training, studying, or working.
みっちり練習(れんしゅう)する。
To practice intensively.
先生(せんせい)にみっちり(きた)えられた。
I was rigorously trained by my teacher.
試合(しあい)(まえ)一週間(いっしゅうかん)みっちり特訓(とっくん)して本番(ほんばん)(そな)えた。
I trained intensively for a week before the match to prepare for the real thing.
2. tightly packed; crammed full
Describes something being filled to capacity with no space left.
スケジュールがみっちり()まっている。
The schedule is packed tight.
(はこ)(なか)にみっちり荷物(にもつ)(はい)っている。
The box is crammed full of things.
(あさ)から(ばん)までみっちり予定(よてい)(はい)っていて、(やす)(ひま)がない。
From morning to night my schedule is packed solid, and I have no time to rest.

A mimetic adverb with two related senses: thorough intensity (for activities) and tight packing (for spaces/schedules). The common thread is the idea of leaving no gaps.

COMMON COLLOCATIONS:

  • みっちり練習(れんしゅう)する: to practice intensively
  • みっちり(きた)える: to train rigorously
  • みっちり勉強(べんきょう)する: to study thoroughly
  • みっちり()まっている: to be packed tight
  • みっちり仕込(しこ)む: to train someone thoroughly

SIMILAR WORDS:

  • しっかり: properly, thoroughly — broader usage, emphasizes doing things right
  • びっしり: densely packed, filled with — emphasizes visual density (text, schedules)
  • ぎっしり: jam-packed — emphasizes physical tightness of packing
  • 徹底的(てっていてき)に: thoroughly — more formal equivalent for the "intensive" sense

REGISTER:
Informal but not overly casual. Common in everyday conversation, especially about training, studying, or busy schedules.