idiosyncratic

Now you have to post it in your LJ.

that's more than one word so shut up.

So you said "wonderful." Well, that's what I was gonna say about you, but I thought you'd make fun of me for being corny! You copied me!! STOP COPYING ME!!!! Actually I was going to say "dependable," or "safe" or "brilliant" or "kind" or "ethical" or "theoretical" or "loyal" or "powerful" or "nice" or "excellent." But nothing seemed to capture everything I meant. I needed three words, so I could have said, "the best sister". This meme gives me a headache.

Also, I didn't leave a space between that's and what so here are the suggestions LJ made. It's true poetry:

"hardhat, Tahiti, towhead, Whitehead, whitehead, thirded, Deadhead, deadhead, dhoti, thudded"

But you used a big fancy New York City Editor word, whereas I used a simple-but-fancy-by-engineer-standards word.

So you WIN!!! WIN!!! WIN!!!

Plus...how did it know I was a Deadhead anyway???

Witty

I've been absent this post, 'cause I had no one-word reply. I like Nancy's answer, but it's taken. Anyway, I've always thought that when you do not like the rules, and you have a chance to change them, do. So...I'm changing the rules. Here are my many cdozo words:
helpful, kind, generous, sentimental, safety-conscious, scientific, financially-astute, photographer, funny, witty, curious, open-minded.

I could go on...but you might start blushing.