すがすが清々sugasugaしいshii
1.

Describes a feeling or atmosphere that is exceptionally pleasant and invigorating, characterized by a sense of clarity and renewal, often associated with nature or a fresh environment.

2.

Refers to a state of mental or emotional clarity, where thoughts and feelings flow smoothly without hindrance, resulting in a light and uplifting sensation.

3.

Indicates a straightforward and earnest disposition, conveying a sense of decisiveness and enthusiasm in actions or emotions.

Example:

今日はすがすがしいお天気ですね。