"flickered" in the verb sense
1. flicker, waver, flitter, flutter, quiver
move back and forth very rapidly
"the candle flickered"
2. flicker, flick
shine unsteadily
"The candle flickered"
3. flicker, flick
flash intermittently
"The lights flicked on and off"
Source: WordNet® (An amazing lexical database of English)
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