whilom Meaning, Definition & Usage

Whi"lom adverb
Etymology
AS. hwilum, properly, at times, dative pl. of hwil; akin to G. weiland formerly, OHG. hwilm, See While, n.
Definitions
  1. Formerly; once; of old; erewhile; at times. Obs. or Poetic Spenser.
    Whilom, as olde stories tellen us, There was a duke that highte Theseus. Chaucer.

Webster 1913