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narrow; tight; cramped
formal; stiff; strict; ceremonious; rigid
constrained; uncomfortable
tight (e.g. finances)
靴が窮屈で足が痛いです。
My shoes are tight and my feet hurt.
窮屈な態度で接してきました。
He approached me with a stiff attitude.
規則が窮屈で自由がありません。
The rules are restrictive and there's no freedom.