His dealings are all above board.
I am all at sea.
For the first week, the apprentice felt like fish out of water.
To wash ones dirty linen in public
A man of straw
The old father brought home the moral of unity by asking each of his sons to break the bundle of sticks.
Her fame spread far and wide because she was a talented singer.
CANDOR (find synonym)
IMBECILE (find synonym)
MASTICATE (find synonym)