Build on (to) (3)
I believe the answer is:
add
(Other definitions for add that I've seen before include "Augment" , "Say as a further remark" , "Put together (numbers)" , "put two and two together" , "Determine the sum of" .)
I believe the answer is:
add
(Other definitions for add that I've seen before include "Augment" , "Say as a further remark" , "Put together (numbers)" , "put two and two together" , "Determine the sum of" .)