thoughtful

adj

1.
having intellectual depth
2.
exhibiting or characterized by careful thought
long-thinking thoughty þinkly
Antonym:
thoughtless
Derived from:
thoughtfulness
3.
characterized by solemn, sincere manner
serious-minded
Derived from:
thoughtfulness
4.
taking heed; giving close and thoughtful attention
heedsome listful attentive heedful paying attention
Derived from:
thoughtfulness
5.
considerate of the feelings or well-being of others
Derived from:
thoughtfulness