Synonyms for "shadowless" include bright, illuminated, radiant, glowing, luminescent, gleaming, shining, brilliant, lucid, clear, transparent, crystal-clear, and pure. These words all suggest a lack of darkness or obscurity and a sense of clarity and lightness. Shadows can be a metaphor for negativity, uncertainty, and doubt, so the absence of shadows can signify positivity, clarity, and certainty. Used in a figurative sense, "shadowless" can evoke feelings of transparency, honesty, and truthfulness. Regardless of its connotations, "shadowless" is an evocative word that can be used in a variety of contexts to convey a sense of lightness and clarity.