a.

1. 贵重的，宝贵的，珍贵的
   He has sent me most precious gifts.

   他送给我极为珍贵的礼物。

   Time is precious.

   时间是宝贵的。

2. 可爱的，珍爱的，宝贝的
   His children are very precious to him.

   他极疼爱自己的孩子。

3. 【贬】过分精雕细琢的；矫揉造作的
4. 【口】十足的[B]
   He is a precious miser.

   他是个十足的吝啬鬼。

5. 【口】不值钱的[B]

ad.

1. 【口】很，非常
   You'll get precious little sympathy from her.

   你不会得到她多少同情的。

n.

1. 【口】（用作称呼）宝贝，心爱的人

adj.

1. having great value.
2. greatly loved or treasured by someone.
3. informal, chiefly ironic considerable:
   a precious lot you know!
4. derogatory affectedly concerned with elegant or refined language or manners.

n.