healthy; in good health; robust
Describes a person's physical condition, often used for older people who are still vigorous. Common in greetings and well-wishes.
Grandpa is still healthy even at ninety.
Please take care of yourself (stay well).
Refers to being good at something, often a practical skill or art. Slightly old-fashioned; 上手 or 得意 are more common in modern casual speech.
He is a smooth talker (literally, skilled with his mouth).
My grandmother was skilled at knitting.
Noun usage for a highly skilled person. Often replaced by 達人 in modern Japanese, but 達者 can still appear in set phrases or older texts.
See also: 達人
He was known as a master of swordsmanship.
He is proficient in English.
My grandmother is still spry on her feet even at eighty.
Please take good care of yourself and stay well.
達者 casually describes being fit, skilled, or healthy, while 健在 emphasizes continuing to be alive and vigorous over time.
worldly-wise; skilled at navigating life