Tough nut to crack synonyms | adjectives

Synonyms for Tough nut to crack as an Adjective

• uncompromising

  stiff, pigheaded
• stringent

  stiff
• austere

  stiff
• harsh

  stiff, pigheaded
• solid

  stiff
• hard-line
• definite
• unyielding

  pigheaded
• inflexible

  pigheaded
• intransigent
• stern
• rigorous
• adamant

  pigheaded
• fixed
• exact
• undeviating
• bullheaded
• changeless
• determined
• firm
• hard
• inelastic
• inexorable
• invariable
• obdurate
• set
• single-minded
• static
• strait-laced
• unalterable
• unbending
• unbreakable
• unchanging
• unmoving
• unrelenting
• adamantine
• incompliant
• chiseled
• dead set
• locked in
• set in stone
• unpermissive
• rigid
• hard-hearted
• callous
• dogged
• hard-boiled
• hard-nosed
• heartless
• immovable