Possibly a blend of massive + huge
mahoosive (comparative more mahoosive, superlative most mahoosive)
- (chiefly Britain, slang) massive; very large; huge
2000 March 27, Laurence Bogle, “Re: DF”, in alt.fab.robert-jordan, Usenet:
Well, I haven't had any real problems with it, it's not the most reliable ISP I've ever used (mahoosive understatement), but considering it's free it's not too bad.
2002 September 24, Frothie, “Re: More Mahoosive Spiders :S”, in alt.babylon5.uk, Usenet:
I even said to someone look at them mahoosive mosquitoes!! […] I tell ya, between the mahoosive mosquitoes, bees & wasps and caterpillars, I was VERY happy to get back to the city & it's pollution.
2003 October 10, Catkins, “Re: Just 'done' Tescos”, in freeserve.chat, Usenet:
We do have a rather mahoosive store locally.
2010 January 23, humble.life, “Re: get this...”, in alt.support.depression, Usenet:
Those destinations are the span of England. And it's not exactly a mahoosive country...