The number of unregistered voters is 13,000, according to rough estimates.
Synonyms and examplesapproximateWe can only give an approximate number for dinner until all the invited guests have responded.
inexactHistorical comparisons are always inexact and often misleading.
impreciseSuch estimates are inherently imprecise.
looseThe film is a loose adaptation of her book.
Antonyms and examplesexactThe exact number of people killed will never be known.
preciseI need precise measurements for the room.
Go to the thesaurus article about these synonyms and antonyms ofrough.
See alsoapproximately
about
around
roughly
or soinformal
-oddinformal
give or take
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If a time, number, amount, etc. is not completely accurate, but close, it isapproximate. If something is done or happens in a way that is not exact but is close to a particular time, amount, or number, you can useapproximately.