ETYMOLOGY
from discord + -ful
EXAMPLE
“…Thus as they marched all in close disguise,
Of fayned loue, they chaunst to ouertake
Two knights, that lincked rode in louely wise,
As if they secret counsels did partake;
And each not farre behinde him had his make,
To weete, two Ladies of most goodly hew,
That twixt themselues did gentle purpose make
Vnmindfull both of that discordfull crew,
The which with speedie pace did after them pursew…”
From: The Second Part of The Faerie Queene
By Edmund Spenser, 1596
Lexicophilia 