(verb) be imminent or about to happen. Synonyms: impend. Example: "Changes are impending."
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Verb Definition 1
(adj) close in time; about to occur. Synonyms: at hand(predicate), close at hand(predicate), imminent, impendent. Examples: "Retribution is at hand." "Some people believe the day of judgment is close at hand." "In imminent danger." "His impending retirement."