| Word | Definitions | Synonyms |
|---|---|---|
| ersatz | (adjective) artificial and inferior | Synonyms: substitute |
| (noun) an artificial or inferior substitute or imitation | - | |
| erst | (adverb) at a previous time | Synonyms: at one time, erstwhile, formerly, once |
| erstwhile | (adjective) belonging to some prior time | Synonyms: former, old, one-time, onetime, quondam, sometime |
| (adverb) at a previous time | Synonyms: at one time, erst, formerly, once |