say it: FLUHT-ur
flutter is a verb and noun meaning "move along rapidly and lightly; skim or dart". It carries 9 recorded senses.
move along rapidly and lightly; skim or dart
“The hummingbird flitted among the branches”
move back and forth very rapidly
“the candle flickered”
abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block
a disorderly outburst or tumult
“they were amazed by the furious disturbance they had caused”
the motion made by flapping up and down
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for flutter come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.