noun
senior; older person
Loanword from English 'senior'. Often used in contexts like senior citizens, senior employees, or senior members of a group. Can also appear in compounds like シニア世代 (senior generation).
このクラブはシニアの会員が多い。
This club has many senior members.
シニア向けのスマートフォン教室が開かれた。
A smartphone class for seniors was held.