そぼく素朴soboku
1.

Describes a quality of being unadorned and straightforward, reflecting genuine feelings and intentions without pretense or complexity.

2.

Characterizes a lack of elaborate embellishments or sophistication, evoking an aura of natural warmth and wholesome simplicity that resonates with primordial qualities.

3.

Represents a mindset that is uncomplicated and lacks intricate deliberation, often leading to naive observations or inquiries that arise from pure, unrefined thought.

Example:

素朴な疑問なんだけど、・・・トラとライオンはどっちが強いの?