(v. t.) To add over and above; to add to what has been added\; to annex, as something extrinsic.

adjoin affix agglutinate algebraize amalgamate annex append assimilate attach augment blend burden calculate cast cipher clutter coalesce combine come together complicate compound comprise compute conjoin connect consolidate cumber decorate divide dope out embody encompass encumber enlarge estimate extract roots fasten figure figure in figure out flux foot fuse glue on hitch on include incorporate increase infix integrate interblend interfuse join join with lump together make one measure meld melt into one merge mix multiply ornament paste on plus postfix prefix put together put with reckon reembody roll into one saddle saddle with score shade into slap on solidify subjoin subtract suffix sum summate superadd superimpose superpose syncretize syndicate synthesize tack on tag tag on take account of take on tally tot total tote unify unite unite with work out