active
active imagination

imagination
by a stretch of imagination

lively
a lively imagination

luxuriant
a luxuriant imagination

morbid
a morbid imagination

realm
the realm of imagination

rein
...to one's imagination / to give the reins to one's

run away with
his imagination runs away with him

stir
to stir somebody's imagination

stretch
a stretch of imagination

thin
thin imagination

volcanic
volcanic imagination

want
want of imagination

wanton
a wanton imagination

warm
warm imagination

wayward
wayward imagination