smatter
To make (someone or something) dirty; to bespatter, to soil.
figuratively, obsolete, transitive
To ſay the Ieſuites are all ſmattred vvith Atheiſme, I vvill not: and to ſay, that any of them all are abſolutely ſcotfree from it, I cannot: it is ſo repugnant from their ovvne principles.
To hit (someone or something) with a liquid; to splash, to spatter.
transitive
To approach or study (something, such as a subject) superficially; to dabble in.
figuratively, transitive
I have smattered law, smattered letters, smattered geography, smattered mathematics; I have even a working knowledge of judicial astrology; and here I stand, all London roaring by at the street's end, as impotent as any baby.
To speak (a language or words) with only a superficial knowledge of it.
figuratively, transitive
The Barber ſmatters latin, I remember.
Where it comes from
The verb is derived from Middle English smateren, smatteren, smater, smatere (“to make dirty, defile; to talk idly, chatter; to speak foolishly”); further etymology uncertain, compare the following: * Middle English smotten (“to corrupt, debase, defile”) (whence English smot (obsolete)), related to Late Middle High German smotzen, a variant of smutzen (whence modern German schmutzen (“to become dirty or soiled; to make dirty, soil”)), from smuz (“dirt”). * Danish smadre (“to smash”), German schmettern (“to smash; to resound”) (from Middle High German smetern (“to chatter; to rattle; (dialectal) to make a smacking sound”)); Norwegian Bokmål smadre (“to smash”), Swedish smattra (“to make short, sharp, quickly repeating noises, patter, rattle”), possibly originally onomatopoeic. However, the Oxford English Dictionary says “real connection is very doubtful”.
Adapted from the Wiktionary entry smatter (CC BY-SA 4.0).