The word Hagadoth is misspelled against Haggadoth, which is plural of "Haggada"
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Haggadoth has double "gg" is mispronounced as "g"
Remember double 'GG' in between the strings ha & adoth which should not be misspelled with single 'G'
Wrong Spelling:  ha-g-adoth 
Correct Spelling:  ha-gg-adoth 
Find more incorrect spellings of Haggadoth to spell right way.