1. In an unhappy manner
   "he cheerlessly set out to do the task"
   - mirthlessly

Antonym: cheerfully

• antipruritic
• antipsychotic
• antipsychotic agent
• antipsychotic drug
• antipyresis
• antipyretic
• antiquarian
• antiquarianism
• antiquark
• antiquary
• antiquate
• antiquated
• antique
• antiquity
• antiredeposition
• Antirrhinum
• Antirrhinum coulterianum
• Antirrhinum filipes
• Antirrhinum majus
• antisatellite
• antiscorbutic
• antisemitic
• antisemitism
• antisepsis
• antiseptic