1. In a menacing or scowling way
   "he looked up loweringly"

See also: lowering

• bookfair
• bookie
• booking
• booking agent
• booking clerk
• bookish
• bookishness
• bookkeeper
• bookkeeping
• booklet
• booklouse
• booklover
• bookmaker
• bookmaking
• bookman
• bookmark
• bookmarker
• bookmobile
• bookplate
• bookseller
• be active
• be adrift
• be after
• be amiss
• be at pains