2
general::
unintentionally unkind
thoughtless/inconsiderate
not thinking about the effects of your actions on other people:
• It was inconsiderate of him not to say that he would be late. • a thoughtless disregard for other people’s feelings
tactless
someone who is tactless carelessly says or does things that are likely to upset someone, without realizing what they are doing:
• How could you be so tactless? • a tactless question
insensitive
behaving in a way that is likely to upset someone, or not seeming to care about someone’s feelings. Insensitive is rather a formal word:
• The article is insensitive to the family and friends of the victim. • He later admitted that some of his remarks were ‘insensitive’.
Longman-Thesaurus