tactful[
'tæktful]
a. 
智

, 老练
tactful[ adj ]- having or showing a sense of what is fitting and considerate in dealing with others
<adj.all>
she was tactful enough not to shatter his illusion
a tactful remark eased her embarrassment
- showing skill and sensitivity in dealing with people
<adj.all>
by diplomatic conduct he avoided antagonizing anyone
a tactful way of correcting someone
the agency got the kid-glove treatment on Capitol Hill

Tactful \Tact"ful\, a.
Full of tact; characterized by a discerning sense of what is
right, proper, or judicious.
[Webster 1913 Suppl.]