Siped or Sipped: How To spell?
The word Siped is misspelled against Sipped, which is past tense of "Sip"
Sipped has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings si & ed which should not be misspelled with single 'P'
Wrong Spelling:  si-p-ed  Correct Spelling:  si-pp-ed 
Find more wrongly spelled words of Sipped to spell it well.