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hard; solid; tough
stiff; tight; wooden; unpolished (e.g. writing)
strong; firm (not viscous or easily moved)
safe; steady; honest; steadfast
obstinate; stubborn
bookish; formal; stuffy
このパンは少し緊い気がする。
This bread feels a bit hard.
この蓋は緊くて開けられない。
This lid is so tight I can't open it.
握手が緊くて手が痛かった。
The handshake was so firm my hand hurt.