8 letters · 10 points in Scrabble
noun without obstructions to passage or view
noun characterized by an attitude of ready accessibility (especially about one's actions or purposes); without concealment; not secretive
noun willingness or readiness to receive (especially impressions or ideas)
originFrom Middle English *opennesse, from Old English openness (“openness, publicity”), equivalent to open + -ness. Cognate with Old High German offannussi (“disclosure, revelation, openness”).
Etymology from Wiktionary, CC BY-SA 3.0