Plural of hamperer; multiple people or things that hinder or restrict.
From hamperer + -s (regular English plural). The plural of an already rare agent noun.
Observing which -er agent nouns actually get pluralized in English is linguistically interesting—'hamperers' is technically correct but sounds awkward because we rarely use 'hamperer' as a noun at all, preferring phrases like 'those who hamper' instead.
Complete word intelligence in one call. Free tier — 50 lookups/day.