Originally Posted by
hailstorm
It's not "dead" (thanks for the correction...no trailing "n"), but you definitely out yourself as an old fogie when using it.
When unsure, map to the Japanese penchant for 4-syllable words, so in this case, would be ド・ン・マ・イ (and amusingly, it's an autocorrect suggestion as katakana on both Microsoft IME and the iPhone).