The double-t is probably meant to at least approach the sound of something brittle breaking.
There's a poem called "Anthem for Doomed Youth" in which one line has these words: "rifles' rapid rattle." These words are intended to imitate the sound of bullets hitting things.
http://www.oucs.ox.ac.uk/ww1lit/collections/item/3290
Is "brittle" an onomatopoeia?
3 answers
ok thank you!
The word brittle sounds something brittle being crushed between your fingers.
Prove:
/Bri/- The initial break.
/tt/- The secondary breaks.
/le/- The final breaks that produce the sand like particles.
Prove:
/Bri/- The initial break.
/tt/- The secondary breaks.
/le/- The final breaks that produce the sand like particles.