Crossword Puzzle Hex half

Clue: Hex half

Half of hexa- (TRI with 3 letters)
Half hexadeca- (OCTO with 4 letters)
Half hexa- (TRI with 3 letters)
Like half of U.S. senators (SENIOR with 6 letters)
Like half a cyclical romance (ONAGAIN with 7 letters)
Half gainer, e.g. (DIVE with 4 letters)
The longest word containing only letters from the second half of the alphabet (SOUPSPOONS with 10 letters)
Half-diameters (RADII with 5 letters)
Half the flock (EWES with 4 letters)
Half of a soothing phrase (THERE with 5 letters)