(gussies ~ing gussied)
~ up
If someone is gussied up, they are dressed very smartly. If something is gussied up, it is made more interesting or attractive. (mainly AM INFORMAL)
They all got gussied up.
...plans to ~ up the venues, offering better food and games arcades.
PHRASAL VERB: V-ed P, V P n (not pron), also V pron P