Dictionary of synonyms

Synonyms and antonyms of the word: half-a-billion-year-old

Synonyms:

Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.

Antonyms:

Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.

Usage examples:

A couple of youngsters with magic sand (locally sourced black magnetite), magnets, small steel objects, and a carved/polished bowl fashioned out of a 50-pound, half-a-billion-year-old magnetic glacial erratic Cumberlandite stone found up-Island.

Source: https://www.mvtimes.com/2023/10/11/fossil-day-2023/