Having no distinguishing character or quality(adjective)
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Use "characterless" in a sentence
"My brother used to have a job that paid him to go spend days in characterless chain hotels in Singapore and Paris which of course is very different from being paid to spend days in Singapore and Paris themselves and he traded that job in for one that pays him to stay at home in Connecticut, but at least he gets to see Connecticut."
"Let us pause for a moment to give thanks for Defamer; now that Gawker is run by the kind of characterless swots your parents always wanted you to turn out like, there is a rapidly-shrinking pool of sources for good blog post swipitation."
"In regard to the character-drawing I may say that I have tried to make my figures rather "characterless," and I have done so for reasons I shall now state."