"that is farther out, that is exterior or external; of or pertaining to the outside; further removed," late 14c., comparative of out (on analogy of inner), replacing by 18c. forms descended from Old English uttera (comparative of Old English ut "out") which developed into utter (adj.) and was no longer felt as connected with out. Outer space "region beyond the earth's atmosphere" is attested from 1845.
c. 1300, proferen, "to utter, express," from Old French proferer (13c.) "utter, present verbally, pronounce" and directly from Latin proferre "to bring forth, produce," figuratively "make known, publish, quote, utter." The sense is confused with proffer, and the word now is archaic or obsolete. Related: Profered; profering.
"utter loudly, shout," also figurative, "make importunate demands or complaints," late 14c., from clamor (n.). Related: Clamored; clamoring.