erstwhile vs once
once vs erstwhileerstwhile is an adjective but once is not an adjective.
erstwhile and once both are adverbs.
| Word | Noun | Adjective | Verb | Adverb |
|---|---|---|---|---|
| erstwhile | No | Yes | No | Yes |
| once | No | No | No | Yes |
As adverbs,
erstwhile and once
are synonyms defined as:
- erstwhile and once: at a previous time
| erstwhile (adjective) | once (adjective) |
|---|---|
| belonging to some prior time |
| erstwhile (adverb) | once (adverb) |
|---|---|
| at a previous time | on one occasion |
| at a previous time | |
| as soon as |
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