Slimilarity

Slimilarity: slim-uh-lar'-i-tee, noun.* A slight similarity, a resemblance of trait or characteristic such that some vague common membership can be recognized. "When he was younger, he didn't look anything like his father, but now that he is an adult, I can see some minor slimilarities."

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* This one comes up on google, but in each case appears to be a typo.
** Sorry for all these lame-ish posts, but I'm getting killed by end-of-the-year work. It will let up soon and I'll return to "normal."