smelly vs unclear

smelly

adj
  • Having a quality that arouses suspicion. 

  • Having signs that suggest a design problem; having a code smell. 

  • Having a bad smell. 

noun
  • a Short Magazine Lee Enfield rifle or one of its derivatives. 

unclear

adj
  • Ambiguous; liable to more than one interpretation. 

  • Not easy to see or read; indecipherable or unreadable. 

  • Not having a clear idea; uncertain. 

  • Not clearly or explicitly defined. 

verb
  • To undo the process of clearing. 

How often have the words smelly and unclear occurred in a corpus of books? (source: Google Ngram Viewer )