1. (adjective) acting with or showing thought and good sense

• serious-minded

2. (adjective) taking heed; giving close and thoughtful attention

• attentive
• heedful
• paying attention

1. (adjective) having intellectual depth

• profound

2. (adjective) exhibiting or characterized by careful thought

• bemused
• deep in thought
• lost
• preoccupied
• brooding
• broody
• contemplative
• meditative
• musing
• pensive
• pondering
• reflective
• ruminative
• cogitative
• deliberative
• excogitative
• well thought out

3. (adjective) acting with or showing thought and good sense

• serious

4. (adjective) considerate of the feelings or well-being of others

• considerate

1. (adjective) exhibiting or characterized by careful thought

• considerate

1. (adjective) exhibiting or characterized by careful thought

• contemplation
• musing
• reflection
• reflexion
• rumination
• thoughtfulness

2. (adjective) acting with or showing thought and good sense

• consideration
• thoughtfulness
• earnestness
• serious-mindedness
• seriousness
• sincerity

3. (adjective) taking heed; giving close and thoughtful attention

• advert
• attend
• give ear
• hang
• pay heed
• attentiveness
• heedfulness
• mindfulness
• thoughtfulness

4. (adjective) considerate of the feelings or well-being of others

• considerateness
• consideration
• thoughtfulness

1. (adjective) exhibiting or characterized by careful thought

• thoughtless

2. (adjective) taking heed; giving close and thoughtful attention

• heedless
• unheeding