Resistant to deformation or flow.
Having sufficient skill, knowledge, ability, or qualifications.
Having jurisdiction or authority over a particular issue or question.
Adequate for the purpose.
Permeable to foreign DNA.
Ill-mannered, crude.
Resulting from ignorance; foolish; silly.
Not knowing (a fact or facts), unaware (of something).
Unknowledgeable or uneducated; characterized by ignorance.
One who is ignorant.