blackened

adj

1. Darkened to the point of appearing black; as

   “[...] after journeying across pleasant agricultural countryside to Leicester and thence though the blackened and busy industrial area that stretches almost unbrokenly for over 100 miles from Trent through Rotherham and Leeds to Keighley, [...].”

   “A witness quoted by The Times described "the blackened faces of firemen sitting outside the station in the cold, drinking tea from local sandwich shops in complete silence".”

2. Darkened to the point of appearing black; as:
3. Darkened to the point of appearing black; as:

verb

1. (form-of, participle, past)simple past and past participle of blacken