thoughtful
adj.adj. showing that you have spent time thinking about something or someone. You use this to describe a person who is kind and considers other people's feelings, or a thing that shows careful thought.
adj. characterised by careful consideration or attention to detail; showing concern for the needs and feelings of others.
It was very thoughtful of you to send a card.
The manager gave a thoughtful response to the employee's concerns, showing she had listened carefully to every point.
Her latest novel offers a thoughtful meditation on the nature of memory, avoiding easy answers in favor of a more nuanced exploration of human experience.
From Middle English thoȝtful, thohtful, equivalent to thought + -ful. Compare Dutch gedachtenvol, Swedish tankfull.
Typically used to describe both people and their actions or creations. When describing a person's kindness, it often takes the preposition 'of' ('it was thoughtful of you').