MISCOUNT
miscount
(noun) an inaccurate count
miscount
(verb) count wrongly
Source: WordNet® 3.1
Etymology
Verb
miscount (third-person singular simple present miscounts, present participle miscounting, simple past and past participle miscounted)
To incorrectly count or add up.
Noun
miscount (plural miscounts)
An incorrect counting.
Source: Wiktionary
Mis*count", v. t. & i. Etym: [Cf. OF. mesconter, F. mécompter. Cf.
Miscompute.]
Definition: To count erroneously.
Mis*count", n. Etym: [Cf. F. mécompte error, OF. mesconte.]
Definition: An erroneous counting.
Source: Webster’s Unabridged Dictionary 1913 Edition