psilosopher

from The Century Dictionary.

• noun A would-be or pretended philosopher; a sham sage; an incompetent or mean pretender to philosophy.

from the GNU version of the Collaborative International Dictionary of English.

• noun A superficial or narrow pretender to philosophy; a sham philosopher.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A false philosopher.
• noun One who professes to have knowledge or education which he, in fact, lacks.