Wiktionary
streakily
adv. In a streaky manner.
Usage examples of "streakily".
It filmed the tops of bookcases, filing cabinets, radiators, chair-arms and telephones: it lay smeared streakily across the top of the scuffed knee-hole desk, the dust-free patches marking where papers or books had recently been pushed to one side: motes danced busily in a sunbeam that slanted through an uncurtained crack in the middle of a window: and, trick of the light or not, it needed no imagination at all to see a patina of dust on the thin brushed-back hair of the man behind the desk, to see it embedded in the deeply trenched lines on the grey sunken cheeks, the high receding forehead.
Holman followed her, to stand and watch her move away from him down the streakily lighted corridor toward the stairs.