Aegilops, at eight letters long, is the longest word whose letters are arranged in alphabetical order.
Seven letter words with this property include beefily and billowy. Six letter words include abhors, accent, access, almost, biopsy, bijoux, billow, chintz, effort, and ghosty. Aegilops - 1) a genus of goatgrass 2) stye in inner corner of eye
Comments below may relate to previous holders of this record.