The word Unburow is misspelled against Unburrow, a verb meaning "To force from a burrow; to unearth."
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Unburrow has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings unbu & ow which should not be misspelled with single 'R'
Wrong Spelling:  unbu-r-ow 
Correct Spelling:  unbu-rr-ow 
Check more misspelled words of Unburrow to spell it correct.