Found 2 items, similar to gloweringly.
English → English (WordNet) Definition: gloweringly gloweringly adv : in a glowering manner; “he stared gloweringly at this morning's headlines”
English → English (gcide) Definition: glowering glowering \glowering\ adj. having a cheerless aspect or disposition. Syn: dour, glum, moody, morose, saturnine, sour, sullen. [WordNet 1.5]