spiffily
(adv) done in a spiffy manner
The date went spiffily.
Spiffilious
Spiffilious is someone or something that looks very VERY spiffy. If it's a person they may dress very spiffy or do their hair in a spiffilious manner. If it's an object, like a plant, it may have spiffilious looking leafs. This word can be used in many spiffy conversations.
Mr. Puetzer dresses very spiffilious.