far-out vs perceptible

far-out

adj

  • Used other than figuratively or idiomatically: see far, out. 

  • Very unusual, eccentric or unconventional 

perceptible

adj

  • Able to be perceived, sensed, or discerned. 

noun

  • Anything that can be perceived. 

How often have the words far-out and perceptible occurred in a corpus of books? (source: Google Ngram Viewer )