君の説明はもっともらしいが、筋がちっとも通ってない。

you; buddy; pal; monarch; ruler; sovereign; (one's) master

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

explanation; exposition

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

most; extremely

seeming ... (expresses judgment based on evidence, reason or trustworthy hearsay); appearing ...; -ish; like a ...; typical of ...; appropriate for ...; becoming of ...; worthy of the name ...

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

muscle; tendon; sinew; vein; artery; fiber; fibre; string; line; stripe; streak; reason; logic; plot; storyline; lineage; descent; school (e.g. of scholarship or arts); aptitude; talent; source (of information, etc.); circle; channel; well-informed person (in a transaction); logical move (in go, shogi, etc.); ninth vertical line; seam on a helmet; gristly fish paste (made of muscle, tendons, skin, etc.); social position; status; on (a river, road, etc.); along; counter for long thin things; counter for roads or blocks when giving directions; (Edo period) counter for hundreds of mon (obsolete unit of currency)

not at all (neg. verb)

to go by; to go past; to go along; to travel along; to pass through; to use (a road); to take (a route); to go via; to go by way of; to run (between); to operate (between); to connect; to go indoors; to go into a room; to be admitted; to be shown in; to be ushered in; to come in; to penetrate; to pierce; to skewer; to go through; to come through; to permeate; to soak into; to spread throughout; to carry (e.g. of a voice); to reach far; to be passed on (e.g. of a customer's order to the kitchen); to be relayed; to be conveyed; to pass (a test, a bill in the House, etc.); to be approved; to be accepted; to go by (a name); to be known as; to be accepted as; to have a reputation for; to be coherent; to be logical; to be reasonable; to be comprehensible; to be understandable; to make sense; to get across (e.g. of one's point); to be understood; to be straight (e.g. wood grain); to be well-informed; to be wise; to do ... completely; to do ... thoroughly