ud- / Indo-European roots
Examples of words with the root ud-: about, auslander, but, ersatz, hubris, hysteresis, hysteron proteron, ort, out, outlaw, uitlander, Ursprache, utmost, utter, vigorish.
▲ Derivatives include utmost, carouse, outlaw, hubris.
a. out; utmost from Old English ūt, out;
b. carouse; auslander from Old High German ūz, out;
c. outlaw from Old Norse ūt, out;
d. uitlander from Middle Dutch ute, uut, out;
e. utter1 from Middle Low German ūt, out;
f. utter2 from Old English ūtera, outer, from Germanic suffixed (comparative) form *ūt-era-;
g. but; about from Old English būtan, būte, outside (adverb), from Germanic compound *bi-ūtana, "at the outside" (*bi-, by, at; see ambhi). a-g all from Germanic *ūt-, out.
2. Extended form *uds.
a. ersatz from Old High German irsezzan, to replace, from ir-, out;
b. ort from Middle Dutch oor, out;
c. Germanic compound *uz-dailjam (see dail-);
d. Ursprache from Old High German ur-, out of, original. a-d all from Germanic *uz, *uz-, out.
3. Suffixed (comparative) form *ud-tero-. hysteresis, hysteron proteron from Greek husteros, later, second, after.
4. hubris from Greek compound hubris, violence, outrage, insolence (bri-, perhaps "heavy" "violent"; see gwerə-1) , from hu-.
5. vigorish from Russian vy-, out.
[Pokorny ū̆d- 1103.]