The word Atender is misspelled against Attender, a noun meaning "One who, or that which, attends."
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Attender has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings a & ender which should not be misspelled with single 'T'
Wrong Spelling:  a-t-ender 
Correct Spelling:  a-tt-ender 
Explore spell check of Attender to spell without errors.