1. Despite anything to the contrary (usually preceding a concession)
   "although I'm a little afraid, however I'd like to try it";
   - nevertheless, withal [archaic], still, yet, all the same, even so, nonetheless, notwithstanding, at the same time, even if, be that as it may
    
2. By contrast; on the other hand
   "the first part was easy; the second, however, took hours"
    
3. To whatever degree or extent
   "The results, however general, are important"; "they have begun, however reluctantly, to acknowledge the legitimacy of some of the opposition's concerns"
    
4. In whatever way or manner
   "Victory, however it was brought about, was sweet"; "however he did it, it was very clever"
    
5. In what way or manner or by what means
   "however did you get here so soon?";
   - how

Encyclopedia: However