Use 'inexorable' for processes and events that cannot be halted, emphasizing their relentless nature. Global warming is an inexorable threat that demands immediate action.
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Impersonal Nature
'Inexorable' often describes something without personal feelings or the influence of human desires. The inexorable spread of the desert leaves the villagers no choice but to relocate.
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Negative Connotation
While it can be neutral, 'inexorable' commonly carries a negative connotation, implying a dire or unwanted outcome. The inexorable decline of the ancient ruins saddened historians.