I don't believe "equipt" is a proper word in any English dialect, at least not one with which I am familiar. I've certainly never seen it. There are a few verbs that have the "-t" alternative, like "burnt", but not many, and some, like "learnt" are generally considered archaic spellings nowadays.
caw
I don't recall ever seeing 'equipt' anywhere but in this thread.
Equipt is not a typo; it's simply not American standard English. It is, however, the way I was taught to spell the word and I HATE the "proper" spelling with hateful hatey hatred.
Per Merriam-Webster, "Equipt" is a past participle of "Equip"'
I hadn't heard it before either, but my sister is still in school and it's in one of her reading books. Thanks everyone for the feedback.
http://www.merriam-webster.com/dictionary/equiptDefinition of EQUIPT
past participle of equip
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This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis. Note that some information is displayed differently in the Unabridged.
I've seen it. I'm not sure where, but I'm thinking maybe in fantasy novels, to lend an archaic air to things? But that might not be accurate.
Google Ngram confirms that it's archaic, but still in some use... http://books.google.com/ngrams/grap...tart=1500&year_end=2012&corpus=0&smoothing=50
...apparently things went to hell for 'equipt' in 1750 - wonder what caused that?
I was taught in North Texas, and have since learned that many of our books used outdated spellings, such as equipt (and equpitment). The word is in the unabridged version of M-W
http://www.merriam-webster.com/dictionary/equipt
(Incidentally, my poor editor's hit the point of "Just spell it how you were taught, and we'll straighten it out in copyedits" from all the "learnt, leapt, burnt, dreamt, grey, etc. I'd throw her a "draughty room", but I think she might faint )