Snigling or Sniggling: How To spell?
The word Snigling is misspelled against Sniggling, which is present continuous of "Sniggle"
Sniggling has double "gg" is mispronounced as "g"Remember double 'GG' in between the strings sni & ling which should not be misspelled with single 'G'
Wrong Spelling:  sni-g-ling  Correct Spelling:  sni-gg-ling 
Find more wrongly spelled words of Sniggling to spell it well.