resillier
Resillier is not a recognized word in standard English or French dictionaries. In practice, it often appears as a misspelling or nonce term in informal writing, and does not have a fixed meaning across sources.
Most commonly, resillier is mistaken for resilient, the English adjective meaning able to recover quickly, or
In terms of usage, if you intend the English sense of bouncing back from difficulty, use resilient
Because resillier is not standard, most style guides treat it as a spelling error or a mistaken