Webster’s 1913 has no entry under this spelling.
Shades of meaning
Fernald has no entry of its own for make up; he lists it under add, make.
Where he writes about it:
We cast up or sum up an account, though add up and make up are now more usual expressions. — from add
To make is to cause to exist, or to cause to exist in a certain form or in certain relations; the word thus includes the idea of create, as in Gen. i, 31, "And God saw everything that he had made, and, behold, it was very good." Make includes also the idea of compose, constitute; as, the parts make up the whole. — from make
Synonyms
addmakeadjoinaffixamplifyannexappendattachaugmentbecomebring aboutbring into beingbring to passcast upcausecompelcomposeconstituteconstrainconstructcreatedoeffectenlargeestablishexecuteextendfabricatefashionforceframegetincreasejoin onmake outmanufactureoccasionperformreachrenderrequireshapesubjoinsum up