Is earnt a word

Answer 1

From http://en.wiktionary.org/wiki/earnt

'This is an uncommon (<0.5% as common as earned in the British National Corpus) but entirely acceptable alternative form of the simple past and past participle earned. Still considered to be incorrect by many, who are largely unaware of the historical development of the English language. Other verbs which can be conjugated in this way are: learn (learnt), dream (dreamt), spell (spelt).'