1 archaic : dear, treasured
2 : discreetly cautious: as a : hesitant and vigilant about dangers and risks b : slow to grant, accept, or expend

Merriam Webster's online dictionary

Write the new word on some post its and put them on the bathroom mirror, the refrigerator, the car radio, the baby's forehead, anywhere you're likely to see it. I remember some nineteen year old smart alec telling me on my twenty fifth birthday that our vocabulary stops growing at that age. Since then its been my goal to prove her wrong (see sour face here).