This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Without shade: exposed, not sheltered from the sun.

adj. Without shades of colour.

adj. Being without shade; not shaded.

Without shade or shelter from the light, heat, or the like: as, shadeless streets.

"Yes, you can stand in front of your shadeless window for 15 minutes as soon as you roll out of bed."

tallgrass    scrub-covered    bristlecone    intelligence/human    brick-floored