unscientific (adj.)

• contradictory
• fallacious
• faulty
• flawed
• illogical
• inauthentic
• inconclusive
• incongruous
• inconsequent
• inconsequential
• inconsistent
• invalid
• irrational
• loose
• reasonless
• self-contradictory
• senseless
• unauthentic
• unconnected
• unreasonable