1. In a joyous manner
   - happily, mirthfully, gayly, blithely, jubilantly, euphorically

See also: merry

• undeterminable
• undetermined
• undeterred
• undeveloped
• undeviating
• undiagnosable
• undiagnosed
• undies
• undifferentiated
• undigested
• undignified
• undiluted
• undiminished
• undimmed
• undine
• undiplomatic
• undiplomatically
• undirected
• undiscerning
• undischarged
• undiscipline
• undisciplined
• undisclosed
• undiscouraged
• undiscoverable