Which word means known or understood by very few?

• A. estimable
• B. exculpate
• C. esoteric
• D. exigent

Answer: (C)

The key idea is that this word describes knowledge that is accessible to a small, specialized group and not widely understood by most people. Esoteric refers to ideas, terms, or topics that require specific training or background to grasp, often seeming obscure to the general audience. It carries a sense of exclusivity or secrecy—think of scholarly jargon or technical concepts that only experts in a field routinely understand.

The other words don’t fit that sense: estimable means worthy of respect or admirable; exculpate means to clear someone of blame; exigent means demanding immediate action or attention.