一度何かやると決めたら、あくまでやり通せ。

once; one time; on one occasion; temporarily; for a moment; one degree; one tone; one musical interval

what; how many; you-know-what; that; whatsit; what's the expression; what do you call them; what?; hey!

indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way

to do; to undertake; to perform; to play (a game); to study; to send; to dispatch; to despatch; to put; to move; to turn (one's head, glance, etc.); to give (esp. to someone of equal or lower status); to let have; to present; to bestow; to confer; to make (a vehicle) go faster; to run (a business); to keep; to be engaged in; to practice (law, medicine, etc.); to practise; to have (food, drink, etc.); to eat; to drink; to smoke; to hold (a performance); to perform; to show; to ease (one's mind); to harm; to injure; to kill; to have sex with; to live; to get by; to get along; to do ... completely; to do ... broadly; to do ... to a great distance; to do ... for (someone of equal or lower status); to do ... to (sometimes with negative nuance); to make active efforts to ...

if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)

to decide; to choose; to determine; to make up one's mind; to resolve; to set one's heart on; to settle; to arrange; to set; to appoint; to fix; to clinch (a victory); to decide (the outcome of a match); to persist in doing; to go through with; to always do; to have made a habit of; to take for granted; to assume; to dress up; to dress to kill; to dress to the nines; to carry out successfully (a move in sports, a pose in dance, etc.); to succeed in doing; to immobilize with a double-arm lock (in sumo, judo, etc.); to eat or drink something; to take illegal drugs

to the end; to the bitter end; to the last; stubbornly; persistently; consistently; to the utmost; after all; it must be remembered; only; purely; simply

to stick through; to force through; to spread throughout; to thoroughly diffuse; to make a path between two points; to proceed in a logical manner; to let pass; to allow through; to lead (someone) into (a house, room, etc.); to show in; to go through (a middleman); to (look, listen) through (a window, wall, etc.); to pass (a law, applicant, etc.); to force to accept; to force agreement; to continue (in a state); to persist in; to do to the entirety of; to cover all of; to span the whole ...; to do from beginning to end without a break; to convey (one's ideas, etc.) to the other party; to do to the end; to carry through; to complete