Relief; a feeling of reassurance when worries or dangers have passed.
長い捜索の末、犬が見つかり家族は安堵した。
After a long search the dog was found and the family felt relieved.
試験の合格通知を受け取って安堵の表情を浮かべた。
He wore an expression of relief after receiving the exam acceptance letter.
被害が軽微で済んだと知り、住民たちは安堵した。
Learning that the damage was minor, the residents felt relieved.
Historical: the formal recognition (by a shogunate or lord) of a right to land or domain — a feudal acknowledgement of ownership (e.g., honryō ando).
江戸時代、藩主は本領安堵を幕府から受ける必要があった。
In the Edo period, feudal lords needed to receive formal confirmation of their domains (honryō ando) from the shogunate.
Archaic: living safely surrounded by walls — an older meaning that is now almost obsolete.
古典文学では城中に安堵して暮らす様子が描かれることがある。
Classical literature sometimes depicts people living in safety within a castle's walls.