RANCOROUS

rancorous. Rancorous, a. malignant, most or very spiteful

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Ran″cor‐ous (–ŭs), a. [[OF. rancuros.]] Full of rancor; evincing, or caused by, rancor; deeply malignant; implacably spiteful or malicious; intensely virulent. So flamed his eyes with rage and rancorous ire. Spenser.