WordWeb Online

1. Having or showing a sense of what is fitting and considerate in dealing with others
   "she was tactful enough not to shatter his illusion"; "a tactful remark eased her embarrassment"
    
2. Showing skill and sensitivity in dealing with people
   "a tactful way of correcting someone";
   - kid-glove

See also: considerate, diplomatic, diplomatical, discerning, discreet

Antonym: untactful

Encyclopedia: Tactful