the odd one out
-odd
suffix
 informaluk / -ɒd/ us / -ɑːd/
used after a number, especially a number that can be divided by ten, to show that the exact number is not known: （尤用于可被10整除的数字后）大约，…多一点
I'd say Robert's about 40-odd - maybe 45.我猜罗伯特大约有40几岁——也许45岁。

Thesaurus: synonyms, antonyms, and examples

approximately
approximatelyHe makes approximately $60,000 a year.
aboutThe job will take about three months.
aroundI will be there around four o'clock.
roughlyThere were roughly 200 people at the meeting.
or soThey raised £200 or so for charity.

SMART Vocabulary: related words and phrases

Approximate
about
approx.
approximate
approximately
around
exact
guess
inexact
inexactly
ish
loosely
loosey-goosey
round
rule
sense
sketchy
some
something
something like 96 percent, half, etc.idiom
somewhere

odd | American Dictionary

odd
adjective
us/ɑd/

oddadjective (STRANGE)

[ -er/-est only ]
strange or unexpected:
an odd person
That’s odd – I thought I left my glasses on the table but they’re not here.

oddadjective (SEPARATED)

[ not gradable ]
(of something that should be in a pair or set) separated from its pair or set:
He’s got a whole drawer full of odd socks.

oddadjective (NUMBER)

[ not gradable ]
(of numbers) not able to be divided exactly by 2:
Some examples of odd numbers are 1, 3, 5, and 7.
odd
adverb[ not gradable ]
us/ɑd/

oddadverb[not gradable] (APPROXIMATELY)

used after a number, esp. a number that can be divided by 10, to show that the exact number is not known:
He holds another 50-odd acres of land in reserve, providing plenty of room for expansion.

Examples of odd

odd
The method of referring to numbers (' 150 thousand ') seems somewhat odd.
To see a statue of this scale displayed indoors is odd, and the way the effigy dominates the interior space is strange at first.
To modern sensibilities these key dramatic moments that withhold opera's defining force, the virtuosic voice, may seem odd.
It thus behaves like an odd-sized cycle of half the size.
The oddest aspect of these books is that they were evidently written in ignorance of each other.
Secondly, there are numerous atypical melodic gestures and skips, odd adaptations, the overuse and over-manipulation of formulae.
The standard account produces even-parity pathologies because it cannot exhaustively parse odd-parity forms using only disyllabic feet.
Again, this pattern in which negative events ranked second and odd events ranked third was reflected in the figures for most of the individual children.
There is thus a prominent odd- even effect in this group, with the odd ion masses larger than their even counterpar ts.
Experiments may seem an odd choice for studying social phenomena such as norms.
We opted to compare our simulations with the odd day observations.
It was an odd empire; many crucial relations were the obverse of what was seen in other empires.
The larger problem with this definition is that it leads the author to discuss a somewhat odd selection of languages.
However, unlike underived forms, secondary stress is allowed in word-final odd-numbered syllables in derived forms.
It may seem odd to say that part of the transfer consisted in the damage to the dock.
See all examples of odd
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.