gacchiri
Describes something or someone that is strongly and solidly built. Often used for body types or construction.
💡Describing a rugby player — 'He has a gacchiri solid build.'
がっちりした体格の男性だ。
He is a man with a gacchiri solid build.
The new bookshelf is ___ built and won't wobble.
新しい本棚は○○していてぐらつかない。