reverie

A reverie is a state of being pleasantly lost in one's thoughts; a daydream. Imagine sitting by a window on a rainy afternoon, watching the droplets race down the glass while your mind drifts away from the present moment into a world of imagination or memory. It is a sophisticated, slightly poetic term, often used to describe a quiet, meditative, or slightly detached mental state. While it can imply a lack of focus, it is usually viewed in a positive or serene light, rather than a negative one. You might say someone is "lost in a reverie" or "shaken from a reverie."
In conversation
Interrupting a daydream
Earth to Mark! You've been staring at that wall for ten minutes.
Earth to Mark! You've been staring at that wall for ten minutes.
Oh, sorry. I was lost in a bit of a reverie about my upcoming vacation.
Oh, sorry. I was lost in a bit of a reverie about my upcoming vacation.
Used here to explain being absent-minded due to pleasant thoughts.
A quiet afternoon
The music is so beautiful, it pulls me into a total reverie.
The music is so beautiful, it pulls me into a total reverie.
I know exactly what you mean. It's the perfect atmosphere for it.
I know exactly what you mean. It's the perfect atmosphere for it.
Highlights how external stimuli can trigger this mental state.
Examples
She fell into a deep reverie while listening to the soft piano music.
She fell into a deep reverie while listening to the soft piano music.
His pleasant reverie was abruptly interrupted by the loud ringing of the telephone.
His pleasant reverie was abruptly interrupted by the loud ringing of the telephone.
The poet spent his afternoons in a waking reverie, weaving abstract concepts into lyrical stanzas.
The poet spent his afternoons in a waking reverie, weaving abstract concepts into lyrical stanzas.