In a dejected manner, in a dispirited way.(adverb)
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Use "dejectedly" in a sentence
""I've had a word with my supervisor," I begin dejectedly, knowing what's coming next."
""Who's going to vote for Chicago in the first round besides Canada and Jamaica?" said 1960 Olympic gold medalist Bill Mulliken, walking dejectedly from the rally."
"I, "dejectedly," haven't been in love for quite a long, long time now."