みっしり

みっしり is an onomatopoeic adverb that emphasizes complete density with no wasted space or gaps. It conveys a sense of things being crammed together so thoroughly that nothing more could fit.

Common patterns

• みっしり詰(つ)まる: to be packed tightly
• みっしり埋(う)まる: to be completely filled
• みっしりと入(はい)っている: to be tightly packed inside
• みっしり並(なら)ぶ: to be lined up densely

Similar words

• ぎっしり: tightly packed (more common, nearly interchangeable)
• びっしり: densely covered/written (emphasizes surface coverage)
• ぎゅうぎゅう: crammed, squeezed (often for people in tight spaces)
• すかすか: sparse, with gaps (opposite meaning)

みっしり often takes the particle と (みっしりと) in more formal or written contexts. In casual speech, と is frequently dropped.