megrim: /mee-grim/

1. low spirits
2. a whim or caprice.
3. migraine.

how to use in casual conversation:

"i know you'd like it if i was all megrim and stuff. too bad"
"on a megrim, i decided to start collecting the white hairs i periodically find in my beard"

not to be confused with:

stay grim

how it makes me feel:

this is a weird one. it gets points for obscurity which is always good but the differing definitions seem to be at odds. having low spirits and having a migraine would seem to be complementary:

"i'm megrim about this megrim" (this migraine has got me down)

nobody would look at you funny for that, right?

but throwing 'a whim' in there just makes it confusing:

"i'm megrim on a megrim" (i'm sad on a whim)

-or-

"on a megrim i gave myself a megrim" (i gave myself a skull-crushing headache because i felt like it)

if someone said that to me (and i sifted through the possible meanings to confirm they are saying what i think they're saying) the first thought that would come to mind would be something along the lines of "geez, who let the goth in?" or "cheer-up emo kid". however, using the same word twice in a sentence when it has different meanings and the same spelling would be sort of stupid to begin with so perhaps in the interest of being fair to the word i should just shut up, spell check this bad-boy and hit publish...