What does 'pensive' mean?
Thoughtful, reflective thoughtful, in the sense, of tending to think ---- ; pensive : 1362, from Old French pensif (11c., fem. pensive), from penser "to think," from Latin pensare "weigh, consider," freq. of pendere "weigh" (see pendant). ;
I can see why the word thoughtless might seem to be an antonym for pensive, since a pensive person thinks a lot and a thoughtless person doesn't, however, thoughtlessness is really about irresponsibility, it is not really about thought in general. The opposite of thoughtless is thoughtful or responsible, not pensive. The opposite of pensive would be spontaneous, or glib.
There's a few ways to say it. To mean 'attentive': Aufmerksam Du bist aufmerksam. To mean 'prudent': bedacht, bedächtig, or umsichtig Du bist bedacht. To mean 'caring': fürsorglich Du bist fürsorglich To mean 'pensive': nachdenklich or gedankenvoll Du bist nachdenklich To mean 'considerate': rücksichsvoll Du bist rücksichsvoll
Hi there...cats use their tail to express emotion. A flicked tail could signal irritation or frustration if it's quick and hard where a slow wavering could mean the cat feels pensive/thinking. Here's an illustrative chart showing the different meanings of the cats tail: http://www.freewebs.com/streetcatrescue/tail%20chart.png