A cashback is now usually used as a marketing device, as the comments show. Earlier, at least in the UK and before cash machines worked well, supermarkets promoted it to allow customers to take cash from their own bank account when they paid using a debit card. The customer might then spend that cash in the store. Also, at that time a customer might need come to the store and buy goods mainly to obtain the cash.
An 'oftcumden' is a person who has come from 'oft', far away, and probably speaks with a different accent. In some communities in the North of England, a person may still be an 'oftcumden' after living there many years.
There are several words that combine with 'favor' in American English that are spelled 'favour' in British English. Although several of both versions appear in Wordnik, at the time of this entry neither 'favor' nor some of the others 'unfavorable' 'unfavourable' are cross-referenced.
The spellchecker on this facility appears to 'favour' the British English version!
As in many of the examples, 'togethers' usually only occurs as the plural of the compound noun 'get-together'. They might have a 'get-together' to celebrate, and students and families may have many 'get-togethers'. Wordnik lists both.
Noun: 'gozunder' 'gozunders'. A 'gozunder' is a 'potty', 'chamber', 'chamberpot' that goes (or went) under the bed, because it 'goes under'. We all had a 'gozunder' in the days to pass urine when the toilet, lavatory, rest room ... was not in the house.
I still have a 'gozunder' that has lost its handle. It lives in a cupboard because it will not 'go under' my 'divan'. In the UK a 'divan' is not a sofa, it is a normal height single bed on castors, without a headboard or foot board.
A 'gozunder' is useful when one feels sick, wants to throw up. Especially as one ages, it is also useful when someone else is using the bathroom, wash room, ...
The verb 'to statement' has the inflections 'statements', statementing' which is in Wordnik, and 'statemented'. It refers to the process in the UK and probably beyond whereby a school is required to prepare a statement of special educational need (SEN) when appropriate.
['Weathers' (above) is only listed as "v. third-person singular simple present indicative form of weather"
The first example that is listed uses 'weathers' as a plural only noun. "... crews will be ready to respond to any incident in all kind of weathers". 'Weathers' are kinds of 'weather' (singular only noun).
"“Weathers mad depressing can't even go outside” @ShoobyyDoo" The tweets miss out the apostrophe which if it were there would be 'weather's' meaning 'the weather is'. ]