| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | by chance |
| Synonyms: | by mistake, fortuitously, haphazardly, unintentionally, unwittingly |
| Main Entry: | unawares |
| Part of Speech: | adverb |
| Definition: | without warning; suddenly |
| Synonyms: | aback, abruptly, accidentally, by accident, by mistake, by surprise, carelessly, ignorantly, inadvertently, mistakenly, off guard, short, sudden, surprisingly, unconsciously, unexpectedly, unintentionally, unknowingly, unprepared, unready, unwittingly |
| Notes: | unaware is an adjective that means 'not being aware of something' and unawares is an adverb meaning 'by surprise; unexpectedly' |
| Antonyms: | consciously, knowingly |
| Main Entry: | haphazardly |
| Part of Speech: | adverb |
| Definition: | unexpectedly |
| Synonyms: | accidentally, aimlessly, by chance, carelessly, casually, inconstantly, randomly |
| Main Entry: | inadvertently |
| Part of Speech: | adverb |
| Definition: | unintentionally |
| Synonyms: | accidentally, involuntarily, not by design, unwittingly |
| Main Entry: | by chance |
| Part of Speech: | adverb |
| Definition: | by accident |
| Synonyms: | accidentally, as luck would have it, by a fluke, by coincidence, by mistake, for some reason, fortuitously, out of the clear blue sky, unexpectedly, unintentionally, unwittingly |
| Main Entry: | unexpectedly |
| Part of Speech: | adverb |
| Definition: | by chance |
| Synonyms: | accidentally, by coincidence, circumstantially, fortuitously |
| Antonyms: | advisedly, deliberately, intentionally |
| Main Entry: | unintentionally |
| Part of Speech: | adverb |
| Definition: | not done on purpose |
| Synonyms: | accidentally, inadvertently, incidentally, involuntarily, unthinkingly |
| Antonyms: | by design, deliberately, intentionally, on purpose, purposely |
| Main Entry: | unwittingly |
| Part of Speech: | adverb |
| Definition: | inadvertently |
| Synonyms: | accidentally, unintentionally |
| Antonyms: | advisedly, knowingly |