| Thereby 1. (adv.) By that; by that means; in consequence of that. 2. (adv.) Annexed to that. 3. (adv.) Thereabout; -- said of place, number, etc. Thesaurus Entries by, by dint of, by means of, by use of, by virtue of, by way of, hereby, herewith, in virtue of, on, per, thanks to, therefrom, therewith, through, upon, whereby, wherewith, wherewithal, with |