A one syllable word is most likely to gain common usage.
100% agreed. Off the top of my head, I can't think of any currency, denomination, or denomination nickname which contains more than 2 syllables. Dollar, buck, cent, pence, pound, yuan, yen, franc, euro, ruble, peso, bitcoin .... "bit"
Yuan is actually Renminbi. 3 syllables there. But, yes, the vast majority are 2 syllables or less. Personally I prefer we use Satoshis and avoid the decimal point entirely.