α. early Old English gesuinc, early Old English gesuinci- (inflected form, before back vowel), Old English geswinc, Old English geswince- (inflected form, before back vowel, rare), Old English geswync, early Middle English geswinch, early Middle English ȝeswinc, early Middle English ȝeswinch, early Middle English ȝeswynch, early Middle English iswinch, early Middle English yswinch.
β. late Old English geswink, early Middle English ȝeswink, early Middle English iswinc, early Middle English iswinck, early Middle English iswink, early Middle English iswynk.