English Usage - backward - English editing.

1.In their adverbial uses backward and backwards are interchangeable in meaning: the car rolled slowly backward and the car rolled slowly backwards. Backward is mainly used in US English, but even there backwards is more common, as the Oxford English Corpus reveals. As an adjective, on the other hand, the standard form is backward rather than backwards: uses such as a backwards glance would generally be considered incorrect.
2.To describe a person with learning difficulties as backward is nowadays offensive.
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