THESAURUS
On
about, above, accidental, accompanying, across, ado, afloat, afoot, after which, against, ahead, along, among, anent, apropos of, as for, as regards, as respects, as to, astraddle, astride, at, atop, by, by dint of, by means of, by use of, by virtue of, by way of, circumstantial, concerning, current, doing, en route to, eventuating, for, forth, forward, forwards, from, going on, happening, headed for, hereby, hereinafter, herewith, horseback, in, in connection with, in contact with, in hand, in passage to, in point of, in re, in reference to, in regard to, in relation to, in relation with, in respect to, in the wind, in transit to, in virtue of, incidental, near, next to, occasional, occurring, of, on foot, on horseback, on route to, on top of, ongoing, onward, onwards, opposite, over, over against, passing, per, pertaining to, pertinent to, prevailing, prevalent, re, referring to, regarding, relating to, relative to, respecting, resultant, speaking of, straddle, straddle-legged, straddleback, taking place, thanks to, thereby, therewith, through, to, touching, toward, towards, under way, up, up against, upon, upon which, versus, vis-a-vis, whereat, whereby, wherefore, whereon, whereto, whereunto, whereupon, wherewith, wherewithal, with, with regard to, with respect to
ROGET THESAURUS
On
Duty
VB
be the duty of, be incumbent, on, be responsible, behoove, become, befit, beseem, belong to, pertain to, fall to one's lot, devolve on, lie upon, lie on one's head, lie at one's door, rest with, rest on the shoulders of, take upon oneself, be bound to, become bound to, be sponsor for, become sponsor for, incur a responsibility, be under an obligation, stand under an obligation, lie under an obligation, have to answer for, owe to it oneself, impose a duty enjoin, require, exact, bind, bind over, saddle with, prescribe, assign, call upon, look to, oblige, enter upon a duty, perform a duty, observe a duty, fulfill a duty, discharge a duty, adhere to a duty, acquit oneself of a duty, satisfy a duty, enter upon an obligation, perform an obligation, observe an obligation, fulfill an obligation, discharge an obligation, adhere to an obligation, acquit oneself of an obligation, satisfy an obligation, act one's part, redeem one's pledge, do justice to, be at one's post, do duty, do one's duty, be on one's good behavior, mind one's P's and Q's.
Progression
N
progress, progression, progressiveness, advancing, advance, advancement, ongoing, flood, tide, headway, march, rise, improvement, advancing, progressive, profluent, advanced, forward, onward, forth, on, ahead, under way, en route for, on one's way, on the way, on the road, on the high road, on the road to, in progress, in mid progress, in transitu, vestigia nulla retrorsum, westward the course of empire takes its way.