1. Exhibiting self-importance
   - boastful, braggart, bragging, braggy, big, crowing, self-aggrandizing, self-aggrandising [Brit] 
2. Full of high-spirited delight
   - elated, gleeful, joyful, jubilant, on top of the world

See also: joyous, proud

• microbiologist
• microbiology
• microbrachia
• microbrewery
• microburst
• Microcentrum
• microcephalic
• microcephalous
• microcephalus
• microcephaly
• microchip
• Microchiroptera
• microcircuit
• microclimate
• microcline
• Micrococcaceae
• Micrococcus
• microcode
• microcomputer
• microcopy
• microcosm
• microcosmic
• microcosmic salt
• microcredit
• microcrystalline