The phrase "are rather sizeable" is correct and usable in written English.
It can be used to describe something that is relatively large in size or extent.
Example: "The new storage units we installed are rather sizeable, providing ample space for all our equipment."
Alternatives: "are quite large" or "are fairly substantial."
Sceptics say that Ord growers are not family farmers committed for life to cane as most Qld and NSW growers appear to be, but rather, sizeable entrepreneurs who could move into other areas if deemed more profitable.
Though the shop itself -- with its white-fringed blue awnings -- is rather small, Nasto's takes up a sizeable chunk of the block.
The startup is also seeking a rather sizeable $100,000 to make Notch fly — with sub-$5,000 raised so far, and 43 days of their campaign left to run.
Potentially dangerous to those living around the volcano, the eruption will affect populations that aren't the same as those directly impacted by the tsunami and earthquake; they are both considerable distances apart on this rather sizeable island.
In particular, people have been sharing this tweet: matthew looks at courteney the same way chandler looks at monica and i don't know what to do with myself pic.twitter.com/8V1gpvnCCJ The photo of Cox and Perry actually dates back to 2005, when Cox was married to David Arquette – hence the rather sizeable wedding ring on her finger.
May's export surge, and the rapid flip back to a rather sizeable trade surplus, make it look like that may be exactly what's happening.
President Peña Nieto is in France on a state visit, and, in an embarrassing development, a rather sizeable fraction of Mexico's federal government appears to have come along for the ride.
While the fine itself is a small and rather symbolic one, given the disgraced political analytics firm went into administration last year, the implications of the prosecution are more sizeable.
These are all sizeable businesses already.
Those are two pretty sizeable "ifs".
