blissful | (adjective) completely happy and contented | - |
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distressful | (adjective) causing distress or worry or anxiety | Synonyms: distressing, disturbing, perturbing, troubling, worrisome, worrying |
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stressful | (adjective) extremely irritating to the nerves | Synonyms: nerve-racking, nerve-wracking, trying |
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successful | (adjective) having succeeded or being marked by a favorable outcome | - |
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unsuccessful | (adjective) not successful; having failed or having an unfavorable outcome | - |
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(adjective) failing to accomplish an intended result | Synonyms: abortive, stillborn |