approximation
[noun]
Synonyms: guess, conjecture, estimate, estimation, guesswork, rough calculation, rough idea

[TahlilGaran] English Synonym Dictionary ▲

ap‧prox‧i‧ma‧tion AC /əˌprɒksəˈmeɪʃən, əˌprɒksɪˈmeɪʃən $ əˌprɑːk-/ noun [uncountable and countable]
[Word Family: verb: approximate; noun: approximation; adverb: approximately; adjective: approximate]

1. a number, amount etc that is not exact, but is almost correct Synonym : estimate
approximation of
an approximation of the total
a rough/crude approximation (=one that is not very exact)
Could you give us a rough approximation of the cost?
a good/close/reasonable approximation

2. something that is similar to another thing, but not exactly the same
approximation of/to
It was the nearest approximation to a crisis she’d ever experienced.

[TahlilGaran] Dictionary of Contemporary English ▲

approximation
noun
ADJ. close, good, nearest, reasonable This is the nearest approximation of cost that they can give us.
crude, rough This is only a crude approximation of the actual conditions in the area.
VERB + APPROXIMATION make We do not have the true figures so we will have to make some approximations.
give (sb), provide (sb with)

[TahlilGaran] Collocations Dictionary ▲