► 副詞
よぼよぼ [よぼよぼ] [coll] meaning: old rank: 3
☆ よぼよぼの爺さん ⇨ A very old man (☛ Very old and weakened)
► 名詞
老人 [ろうじん] [liter] meaning: old rank: 1
☆ 老人介護施設 ⇨ An adult, senior, care facility (☛ An old person)
☆ 老人医療 ⇨ Geriatrics (☛ An old person)
御年寄り [おとしより] [polite] meaning: old rank: 2
☆ 御年寄を大切に ⇨ Be kind to elderlies (☛ An old person)
老後 [ろうご] meaning: old rank: 2
☆ 老後の生活 ⇨ Life after getting old, retirement
老いぼれ [おいぼれ] [contempt] meaning: old rank: 3
☆ 黙れ、老いぼれが！ ⇨ Shut up, you old fart!
高齢 [こうれい] [tech] meaning: old rank: 3
☆ 高齢化社会 ⇨ Society with an aging population
☆ 高齢出産 ⇨ Pregnancy at an advanced maternal age (☛ Advanced in age. Usually about humans or mammals)
高齢者 [こうれいしゃ] [tech] meaning: old rank: 3
☆ 高齢者向け運動器具 ⇨ Exercise equipment tailored for old people
年配 [ねんぱい] [polite] meaning: old rank: 3
☆ あの年配の男の方はどなた？ ⇨ Who’s that older gentleman?
古参 [こさん] meaning: old rank: 4
☆ 彼はチームの中の最古参だ (さいこさん) ⇨ He is the longest-tenured player on the team (☛ Not a person’s age, but how long he/she is in a particular position)
古株 [ふるかぶ] meaning: old rank: 4
☆ 彼は社内一の古株だ ⇨ He is the longest-serving employee of the company (☛ Not a person’s age, but how long he/she is in a particular position)