polish v.

Proto-Indo-European root meaning "to thrust, strike, drive."

It forms all or part of: anvil; appeal; catapult; compel; dispel; expel; felt (n.) "unwoven fabric matted together by rolling or beating;" filter; filtrate; impel; impulse; interpellation; interpolate; peal; pelt (v.) "to strike (with something);" polish; propel; pulsate; pulsation; pulse (n.1) "a throb, a beat;" push; rappel; repeal; repel; repousse.

It is the hypothetical source of/evidence for its existence is provided by: Greek pallein "to wield, brandish, swing," pelemizein "to shake, cause to tremble;" Latin pellere "to push, drive;" Old Church Slavonic plŭstĭ.

late 14c., "polished, burnished" (mid-13c. as a surname), from Latin politus "refined, elegant, accomplished," literally "polished," past participle of polire "to polish, to make smooth" (see polish (v.)).

The literal sense is obsolete in English; the sense of "elegant, cultured" (of literature, arts, etc.) is from c. 1500; of persons, "refined or cultivated in speech, manner, or behavior," by 1620s. The meaning "behaving courteously, showing consideration for others" is by 1748 (implied in politely). Related: Politeness.

Polite applies to one who shows a polished civility, who has a higher training in ease and gracefulness of manners: politeness is a deeper, more comprehensive, more delicate, and perhaps more genuine thing than civility. Polite, though much abused, is becoming the standard word for the bearing of a refined and kind person toward others. [Century Dictionary, 1895]