Acid test: Can the average person understand the name and “get it?” One syllable is great. Two syllables are good. Three are acceptable. Four is getting long.
Failure: Only insiders get the name. Five or more syllables are usually deadly.
Acid test: Test your “day after recall” with some members of the target audience. Make sure they can pronounce and spell it correctly the day after hearing it.
Failure: People cannot remember it or constantly pronounce it incorrectly.