Below are possible answers for the crossword clue Do one's duty.
5 letter answer(s) to do one's duty
mate with; "male animals serve the females for breeding purposes"
deliver a warrant or summons to someone; "He was processed by the sheriff"
do military service; "She served in Vietnam"; "My sons never served, because they are short-sighted"
work for or be a servant to; "May I serve you?"; "She attends the old lady in the wheelchair"; "Can you wait on our table, please?"; "Is a salesperson assisting you?"; "The minister served the King for many years"
be used by; as of a utility; "The sewage plant served the neighboring communities"; "The garage served to shelter his horses"
devote (part of) one's life or efforts to, as of countries, institutions, or ideas; "She served the art of music"; "He served the church"; "serve the country"
be sufficient; be adequate, either in quality or quantity; "A few words would answer"; "This car suits my purpose well"; "Will $100 do?"; "A 'B' grade doesn't suffice to get me into medical school";
Other crossword clues with similar answers to 'Do one's duty'