Answer: glimmer

AnswerCrossword Clue
GLIMMERFaint idea.
GLIMMERGlowworm's light.
GLIMMERInkling.
GLIMMERInkling
GLIMMERFaint manifestation
GLIMMERDim perception
GLIMMERRe
glimmerShine faintly with a wavering light
glimmerto shine faintly or unsteadily