unrelentless
/(ˌ)ʌnrɪˈlɛntləs/adjective
= relentless.
Origin
Early 17th century; earliest use found in John Marston (bap. 1576, d. 1634), poet and playwright. Apparently from un- + relentless, perhaps reinforced by confusion of the latter with unrelenting.
- substitute bench
- substitute broker
- substitute brokerage
- substituted service
- substitute feeding
- substitute fiber
- substitute fibre
- substituteless
- substituter
- substitute's bench
- substitutes' bench
- substitutes bench
- substitute teach
- substitute teacher
- substitute teaching
- substitution
- substitutional
- substitutionally
- substitutional service
- substitutionary
- substitution frame
- substitution group
- substitution pupillary
- substitutive
- substitutively