muse

verb

To think closely; to study in silence; to meditate.
To be absent in mind; to be so occupied in study or contemplation as not to observe passing scenes or things present; to be in a brown study. --Daniel.
To wonder. [Obs.] --Spenser. B. Jonson.
He mused upon some dangerous plot. --Sir P. Sidney.
Thereon mused he. --Chaucer.
Come, then, expressive Silence, muse his praise. --Thomson.