such-and-such

• such and such

such-and-such (plural such-and-suches)

1. A placeholder or generic thing.

   It's a poor system, because if you want to do such-and-such, you must first find that function in a long and disorderly list.

   • 1941 June, “Great Northern 0-6-2 Tanks”, in Railway Magazine, page 256:

     […] it has answered numerous questions as to what such-and-such a locomotive designer would have done, to keep pace with increasing demand for tractive power, had he held office for just a little longer.

   • 2006, “Master of None”, performed by Beach House:

     We always rub our hands too much / We know the reasons, but such and such

• See also Thesaurus:whatsaname

• so-and-so

such-and-such

1. indefinite; some or other, not stated

   I am troubled by the rush of young researchers attempting to prove that females are not inferior to males in such-and-such an ability or such-and-such a trait, especially when it is by no means clear what difference it makes.

• so-and-so
• thus and such
• thus and so

• “such-and-such”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.