"despairing" in the verb sense
1. despair
abandon hope give up hope lose heart
"Don't despair
"despairing" in the adjective sense
1. despairing, desperate
arising from or marked by despair or loss of hope
"a despairing view of the world situation"
"the last despairing plea of the condemned criminal"
"a desperate cry for help"
"helpless and desperate
Source: WordNet® (An amazing lexical database of English)
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