noun
longevity celebration; old age anniversary
Refers to celebrations of specific milestone ages in later life, such as 還暦 (60th), 古希 (70th), 喜寿 (77th), and 米寿 (88th). Often used in formal or congratulatory contexts.
祖父の賀寿を祝うために家族が集まった。
The family gathered to celebrate my grandfather's longevity milestone.
賀寿の品として赤いちゃんちゃんこを贈る習慣がある。
There is a custom of giving a red vest as a gift for a longevity celebration.
還暦 is the specific celebration of one's 60th birthday, while 賀寿 is the broader term for any old-age milestone celebration.
古希 refers to the 70th birthday celebration, a specific instance of 賀寿.
喜寿 is the 77th birthday celebration, another specific 賀寿 milestone.
米寿 is the 88th birthday celebration, a well-known 賀寿 event.
Compound of 賀 (congratulation) and 寿 (longevity). The exact historical derivation is uncertain, but the term is conventionally associated with celebrating advanced age.