Cabinet Ministers
noun
The cabinet colleagues are the cabinet ministers. They're the people in the Cabinet that are all colleagues with each other. They just happen to be known as ministers.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
彼は閣僚のふりをしたが、嘘丸出しだった。
He pretended that he was a cabinet minister, but it was such an obvious lie.