The verb is to choose, the past participle is chosen, and the gerund is choosing.

Choosy or choosey meant to be very selective. You are choosy if you let deal after deal go before settling on the right deal. Finicky would be another good word for choosy.

often the best choice is right under your nose right in front of you, people who are choosey look around for a better alternitive, when often there isn't one and they end up with a worse option to what they could have had.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern --O--EY. That is, seven letter words with 3rd letter O and 6th letter E and 7th letter Y. In alphabetical order, they are:

choosey

spooney

trolley

woolsey

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern -H-OS--. That is, seven letter words with 2nd letter H and 4th letter O and 5th letter S. In alphabetical order, they are:

chaoses

chooser

chooses

choosey

whoosis