A rare or archaic adjective meaning causing worry, distressing, or troublesome; or as a gerund, the act of causing worry.
From 'beworry' + '-ing' (gerund or present participle suffix). As an adjective, it describes something that causes worry; as a gerund, it describes the ongoing action. This formation shows the productive use of '-ing' with the archaic verb.
The existence of 'beworrying' in old texts shows that English had a rich vocabulary for emotional and mental states once. Rather than saying 'It's a worrying situation' (modern English), speakers could say 'It's beworrying' (archaic), packing the same meaning into an intensive adjective that emphasized how deeply troubling something was.
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