Enter a clue or pattern or both:
The Clue
Stir in (3 letter answer)
The Answer
ADD
Tags
Notes
The answer ADD is seen frequently, appearing about once every 60 puzzles.
Related Clues
Annex
Append
Attach
Combine
Continue
Contribute
Count
Insert
Interject
Postfix
Put in
Put on
Stick in
Subjoin
Supplement
Tack on
Tot
Total
Count up
Do sums
Foot up
Form a sum
Say further
Say more
State further
Tally (up)
Tot up
Use a calculator
Use a postscript
Write a P.S.
Write, as a P.S.
Do basic arithmetic
Do sum thing?
Do a summer's work?
Make sense, with "up"
Put 2 and 2 together