i-adjective
stern; grim; rough; rugged; forbidding; overbearing; square (shoulders)
Describes a person's appearance, expression, or build as intimidating, harsh, or rugged. Often used for a stern face, a burly physique, or an imposing presence. The gloss 'square (shoulders)' refers to a broad, solid build.
He has a stern face, but he's actually kind.
そのボディーガードはいかつい体格だった。
The bodyguard had a rugged build.