a.1.Full of darkness.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
In Old English the suffix -full was attached to nouns, not to adjectives, one of the exceptions being deorcfull 'darkful', with double <11>, which renders and imitates L tenebrosus in a mid-11th century text (Liber Scintill.