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Noun: relentlessness  ri'lent-lus-nus
  1. Mercilessness characterized by an unwillingness to relent or let up
    "the relentlessness or their pursuit"
    - inexorability, inexorableness

Derived forms: relentlessnesses

See also: relentless

Type of: mercilessness, unmercifulness

Nearest

releaser
releasing
releasing factor
releasing hormone
relegate
relegating
relegation
relent
relentless
relentlessly
relentlessness
re-let
relevance
relevancy
relevant
relevantly
reliability
reliable
reliableness
reliably
reliance