I . n.
Quack, charlatan, pretender, mountebank, impostor, cheat, mere experimenter ( without scientific training ).
II . a. ; ( also ~al )
1.
Experimental, experiential, from experience ( as distinguished from inference or reasoning ), based on evidence of the senses ( in opposition to the creations of reason ).
2.
Tentative, provisional, hypothetical, experimental, that feels its way, awaiting verification.
3.
Charlatanic, quackish.