Answer:

sourer

Answer	Crossword Clue
SOURER	More lemony
SOURER	More tart
SOURER	More vinegary

SOURER	Less enthused
SOURER	More like a lemon
SOURER	Further disenchanted
SOURER	More morose.
SOURER	More acidic
SOURER	More acidulous
SOURER	Less sweet
SOURER	Not so pleasant

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.