untrained eye

• noviceInexperienced newcomer to field
• amateurNonprofessional participant
• inexperiencedLacking practical knowledge
• naiveInnocently unsuspecting
• obliviousLacking any awareness

unschooled · layman · beginner · ignorant · blind · miss · overlook · subtle · obvious · hidden · detail · trained · discerning · keen · sharp · notice · perceive · spot