Restricting, hindering, or preventing; the present participle of hamper.
From hamper + -ing (present participle suffix). Common in English usage as a gerund or continuous verb form.
The word 'hampering' appears far more frequently than 'hamperers' because participle forms (-ing) are genuinely used in everyday speech ('the rain is hampering our progress'), while agent nouns require us to think of 'hamper' as a noun, which is less natural.
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