Dictionary bagPersonal interest

noun

bag

Something that suits a person's interests or preferences.

Camping is not really his bag, but he enjoys hiking.

Etymology

bagProbable sourceEnglisha sack or container

Probably an extension of bag through a performer's stock of skills or characteristic style. The exact slang development is uncertain.

More examples

Jazz has always been her bag.
If gardening is your bag, join our club.
Working with numbers was never my bag.

Forms

bag · bags

Similar words

interest: The everyday term without the informal idiomatic tone.
forte: Specifically an activity someone does well, not just enjoys.