Synonyms for Get across:

n.

run-through, set out, put across, explain, define, lay out. get across (noun)
cut through, put over, dawn, come home, click, fall into place, track, sink in, cover, get through, pass over, cross, cut across, get over, traverse, penetrate.
impart (noun)
convey, communicate, pass on.

v.

communicate an idea (verb)
pass on, convey, put over.
communication (verb)
put over.
interpret (verb)
explain.

Other synonyms:

communicate. convey. effect
put across.
Other relevant words:
put across, pass on, explain, convey, communicate, define.