undeniable

definition: 
Unable to be denied or disputed:
sentence: 
it is an undeniable fact that some dogs are easier to train than others
difficulty: 
very easy
toefl frequency: 
2
toefl classification: 
adverb: 
adjective: 
undeniably
adverb sentence: 
There is an undeniably powerful link between our biology and our emotions.
adjective sentence: 
verb: 
verb sentence: 
noun: 
noun sentence: