Harmfullest

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    superlative form of harmful: most harmful form-of, superlative

Synonyms

All synonyms
deleteriousmischievousperniciousbadbanefulcounterproductive

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.