1. in a manner characterized by excessive talk or boasting; bombastically
Usage: informal
2. in a manner full of or containing gas; with gas present
Usage: technical or literal

Examples

• He spoke gassily about his accomplishments, exaggerating every detail.
• The politician gassily promised reforms that everyone knew would never happen.
• She gassily boasted about her connections to famous people.
• The mixture expanded gassily when heated.
• He delivered his speech gassily, full of hot air and little substance.