indefinable

There's an indefinable air of tension at the meeting.

she reminds me, in some indefinable way, of my grandmother.

The beauty of the sunset was indefinable.

She had an indefinable sense of unease.

His success was due to an indefinable charisma.

There was an indefinable magic in the air.

The painting evoked an indefinable emotion in me.

She possessed an indefinable grace and elegance.

The novel left me with an indefinable sense of longing.

His music had an indefinable quality that touched the soul.

The mysterious figure had an indefinable aura of power.

The room had an indefinable musty smell.