late 14c., "act of resigning" (an office, etc.), from Old French resignation (14c.) and directly from Medieval Latin resignationem (nominative resignatio), noun of action from past participle stem of Latin resignare (see resign). Meaning "submission, acquiescence" is from 1640s.
he submitted his resignation as of next month
residential
residual
residue
resign
re-sign
resignation
resigned
resile
resilience
resiliency
resilient