Answer: shimmered

AnswerCrossword Clue
SHIMMEREDSparkled
SHIMMEREDShone fitfully
SHIMMEREDGleamed faintly.
SHIMMEREDTwinkled.
SHIMMEREDShone unsteadily
SHIMMEREDLuminesced
shimmeredSHIMMER, to glimmer (to shine faintly or unsteadily)
shimmeredShine with a soft tremulous light