Unrelenting
/ˌʌnriˈlɛntɪŋ/
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Definition
(adj) Not relenting; not yielding in strength, severity, or determination.
Sentence Examples
His unrelenting mildness infuriates me! Where is his drive? Where is his passion?
We're in the second week of an unrelenting heat wave.
CEFR Practice Quiz
The ____ rain continued for three days, causing several major floods in the low-lying areas.