From 𐌱𐌰𐌹𐍂𐌷𐍄𐍃 (bairhts, “bright, clear, manifest”) + -𐌱𐌰 (-ba, “adverb-forming suffix”).
𐌱𐌰𐌹𐍂𐌷𐍄𐌰𐌱𐌰 • (bairhtaba)