Stageringly or Staggeringly: How To spell?
The word Stageringly is misspelled against Staggeringly, an adverb meaning "In a staggering manner."
Staggeringly has double "gg" is mispronounced as "g"Remember double 'GG' in between the strings sta & eringly which should not be misspelled with single 'G'
Wrong Spelling:  sta-g-eringly  Correct Spelling:  sta-gg-eringly 
Find more wrongly spelled words of Staggeringly to spell it well.