Undeniable

So plainly true that honest disagreement is difficult.

Reach for it when Confirming a fact or conclusion supported by compelling evidence.

The repaired sensors showed an undeniable drop in nighttime pollution.

• everyday

  clear

  the fact is readily understood

  not when may allow disagreement despite clarity

• formal

  incontrovertible

  proof leaves no defensible contrary case

  not when too technical for ordinary observation

• formal

  indisputable

  a proposition survives rational challenge

  not when colder than undeniable for visible human talent

Strikingly strong, appealing, or impressive.

Reach for it when Giving emphatic praise to a quality that is immediately evident.

The young soloist brought undeniable warmth to the austere hall.

• everyday

  obvious

  a quality is immediately noticeable

  not when can sound dismissive of others' uncertainty

• warm

  unmistakable

  distinctive character cannot be confused

  not when not necessarily excellent or admirable

• professional

  compelling

  evidence or appeal strongly persuades

  not when persuasion can remain open to denial

• literary

  palpable

  an atmosphere or feeling seems almost tangible

  not when unsuited to abstract proof or numbers

• deniable
• debatable
• imperceptible

• undeniable fact

  One undeniable fact emerged: the wetland absorbed the flood peak.

• undeniable progress

  The reading group made undeniable progress across the term.

• undeniable appeal

  Wide paths give the riverside plan undeniable appeal.