Enter a clue or pattern or both:
The Clue
Lengthen, with "to" (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
Augment
Build (on)
Build on
Bustle
Continue
Elaborate
Increase
Interject
Postfix
Put in
Put on
Raise, with "to"
Subjoin
Supplement
Tack on
Tag on
Tot
Total
Also say
Do sums
Find the sum
Gibe, with "up"
Go on to say
Say further
Say more
State further
Total up
Word on a dipstick
Write a P.S.
Do basic arithmetic
Do sum thing?
Focusing problem, for short
Put two and two together
Tendency for one's mind to wander, for short