Vous avez cherché: one way path (Anglais - Latin)

ja one heart one way
cor unum via una

in one way or the other
cum alia atque alia

to insinuate, work one's way in, intimate
insinuo

go thee one way or other, either on the right hand, or on the left, whithersoever thy face is set.
exacuere vade ad dextram sive ad sinistram quocumque faciei tuae est appetitu

so they divided the land between them to pass throughout it: ahab went one way by himself, and obadiah went another way by himself.
diviseruntque sibi regiones ut circuirent eas ahab ibat per viam unam et abdias per viam alteram seorsu

and i will give them one heart, and one way, that they may fear me for ever, for the good of them, and of their children after them:
et dabo eis cor unum et viam unam ut timeant me universis diebus et bene sit eis et filiis eorum post eo

pedetemptim, pedetemptius, pedetemptissime step-by-step; feeling one's way; gradually, cautiously;
pedetemptim

the lord shall cause thee to be smitten before thine enemies: thou shalt go out one way against them, and flee seven ways before them: and shalt be removed into all the kingdoms of the earth.
tradat te dominus corruentem ante hostes tuos per unam viam egrediaris contra eos et per septem fugias et dispergaris per omnia regna terra

there isn't one way to do so, and there's no special language that can be applied to every curse, though certain themes and vocabulary are frequent and sometimes "magical" gibberish is used in incantations. lead tablets are frequently preferred for their longevity. one standard work that includes far more than latin texts is gager's curse tablets and binding spells from the ancient world], though i highly recommend everyone check out daniel ogden's magic, witchcraft, and ghosts in the greek and roman worlds, an excellent sourcebook with tons of curse examples.
cum execratione maledicta congessit