1. Synonyms for Boorishly include loudly, noisily, aloud, vociferously, clamorously, deafeningly, cacophonously, thunderously, raucously and resoundingly

2. To strike the palms of (one's hands) against one another resoundingly, and usually repeatedly, especially to express approval: She Clapped …

3. Clap definition, to strike the palms of (one's hands) against one another resoundingly, and usually repeatedly, especially to express approval: She Clapped her hands in appreciation