inaccessible

definition: 
something that cannot be reached or communicated with
sentence: 
The company encrypts its data and takes other measures to ensure its information is secure and inaccessible by other competitors.
difficulty: 
easy
toefl frequency: 
2
toefl classification: 
adverb: 
inaccessibly
adjective: 
inaccessible
adverb sentence: 
adjective sentence: 
verb: 
verb sentence: 
noun: 
inaccessibility
noun sentence: 
The dignitary's inaccessibility frustrated the reporters.