Answer:

rational

Answer	Crossword Clue
RATIONAL	Coherent
RATIONAL	Sane
RATIONAL	Clear-headed

RATIONAL	Exercising reason
RATIONAL	All there
RATIONAL	Sound
RATIONAL	Reasoned
RATIONAL	Sensible
RATIONAL	Intelligent.
RATIONAL	Sensible.
RATIONAL	Logical.

RATIONAL	Not silly.
RATIONAL	Lucid
RATIONAL	Well-thought-out
RATIONAL	Thinking
RATIONAL	Take Gore in small doses? That's sane (8)
RATIONAL	Making sense