(onom.) to mutter; to mumble; to murmur

to mumble to oneself

Vietnam characters (like Chinese characters but native to Vietnam)

(onom.) to mutter; to mumble; to murmur

pyran (chemistry) (loanword)

furan (furfuran, used in making nylon) (loanword)

(onom.) twittering of birds; whispering; murmuring