Gossamer. I like the sound as well as the concept. It's not onomatopoeia ( is that correct? I tried spell check but it gave me Onondaga ) because it does not describe a sound but to me it sounds like what it describes. Firmer outlines, g and r, with just a susseration (sp) in between. Is there a word for this effect? (other than silly)
Corruscate is another one with it's flat surfaces of vowel alternating with the hard consonant edges.