Blather rhymes with:
lather, slather, cather, gather, lather, mather, prather, rather, sather, slather, smather, wrather
Blather sounds like:
balder, baldor, baldree, baldry, baldur, balladur, balter, baltierra, beholder, beladur, bellwether, belter, bewilder, billeter, billiter, bladder, blatter, bloodier, blotter, blowdry, blowdryer, boelter, bolder, bollettieri, bolter, boulder, boulter, builder