Learn English – Where does the word “grateful” come from

The Wiktionary entry for "docga" suggests a possible origin in the root of a word originally meaning "power, strength, muscle" along with a diminutive suffix -ga.

It occurs to me that single-syllable words (or single syllables plus a suffix) can come about onomatopeoiacally. The root "dog"/"doc" doesn't necessarily have had to have come from "somewhere".

If the Wiktionary entry is correct that there is only one known attestation of "docga", it is striking that it became the word that eventually ousted "Hund" (as the generic word). On the other hand, I guess it's possible that "docga" was widely used, just not in the kinds of register that tended to be written down. (It's quite common for words to shift register over the years.)

Umpteenth comes from umpty, meaning an indefinite number. Etymology Online says "umpty" is derived from "Morse code slang for "dash," influenced by association with numerals such as twenty, thirty, etc."

And I think the "teenth" insert is to make the "th" easier to pronounce for the ordinal formation, but it might be also to add emphasis by way of lengthening the word. Also, it might be because of the teen/ten connection I mentioned in my comment above: an indefinite number of tens.

And this source suggests that Morse code slang word "ump" is imitative in origin, so I gather that means that that's what a dash sounds like in Morse code.

It occurred to me that this means something like _th times, then, or the equivalent of nth times (to the nth degree?)—although a single dash is Morse code for T.