elucubrate Synonyms

burn the midnight oil assay apply oneself bang away pull an all-nighter work like a horse work one's fingers to the bone work hard push the edge of envelope work one's socks off be slaving at sweat and slave toil away acquit yourself wear yourself to a shadow be rushed off one's feet break one's back beaver away kill oneself attempt beaver bone cram dig grind hustle lucubrate overwork scratch slave study sweat bear down keep one's nose to the grindstone be tied up