'afoot' definitions:

Definition of 'afoot'

From: WordNet
adverb
On foot; walking; "they went to the village afoot"; "quail are hunted either afoot or on horseback"
adjective
Traveling by foot; "she was afoot when I saw her this morning"
adjective
Currently in progress; "there is mischief afoot"; "plans are afoot"; "preparations for the trial are underway" [syn: afoot(p), underway]