The word Triennialy is misspelled against Triennially, an adverb meaning "Once in three years."
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Triennially has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings triennia & y which should not be misspelled with single 'L'
Wrong Spelling: triennia-l-y
Correct Spelling: triennia-ll-y
Find more wrongly spelled words of Triennially to spell it well.