1. splendid; nice; wonderful; delightful; lovely; excellent; fine
結構な事だ。That's a fine thing.
2. sufficient; satisfactory; enough; fine; all right; OK
3. not needing (any more of something); (already) having enough; fine (as in "I'm fine"); no, thank you
いまは結構です。I'm fine for now.
4. rather; quite; fairly; pretty; surprisingly; quite a bit; fairly well
私こう見えて結構強いんですよ。I may look like this, but I'm actually quite strong.
5. structure; construction; framework; architecture