cachinnate \KAK-uh-nayt\verb
: to laugh loudly or immoderately

baksheesh \BAK-sheesh\noun
: payment (as a tip or bribe) to expedite service

effusive \ih-FYOO-siv\ adjective
*1 : marked by the expression of great or excessive emotion or enthusiasm
2 : characterized or formed by a nonexplosive outpouring of lava