wanderer

1. To move about without a definite destination or purpose.

2. To go by an indirect route or at no set pace; amble: wander toward town.

3. To proceed in an irregular course; meander.

4. To go astray: wander from the path of righteousness.

5. To lose clarity or coherence of thought or expression.

Synonyms: These verbs mean to move about at random or without destination or purpose. Wander and ramble stress the absence of a fixed course or goal: wandered down the hall lost in thought. "They would go off together, rambling along the river" (John Galsworthy).
Roam and rove emphasize freedom of movement, often over a wide area: "Herds of horses and cattle roamed at will over the plain" (George W. Cable). "For ten long years I roved about, living first in one capital, then another" (Charlotte Brontë).
Range suggests wandering in all directions: "a large hunting party known to be ranging the prairie" (Francis Parkman).
Meander suggests leisurely wandering over an irregular or winding course: "He meandered to and fro . . . observing the manners and customs of Hillport society" (Arnold Bennett).
Stray refers to deviation from a proper course: "I ask pardon, I am straying from the question" (Oliver Goldsmith).
Gallivant refers to wandering in search of pleasure: gallivanted all over the city during our visit.
Gad suggests restlessness: gadded about unaccompanied in foreign places.