set in (one's) ways

Inflexible; unwilling to change. Grandma will never retire—she's been a teacher for 50 years and is totally set in her ways. You'll never convince him to change, he's too set in his ways now.

Common Names:

Name	Pronounced	Usage
Mollie	['mɔli]
Maiara	-	Native American, Tupí
Eos	e-aws (Ancient Greek), EE-aws (English)	Greek Mythology
Lucasta	-	Literature
Goibniu	-	Irish Mythology
Marylu	mer-ee-LOO, mar-ee-LOO	English (Rare)