a-rippleadv.

/əˈrɪp(ə)l/Etymology: a prep.1 + ripple n.2
the world > space > shape > unevenness > projection or prominence > corrugation > [adverb] > in a ridged manner
1855 R. Browning Cleon in II. 186 The muscles all a-ripple on his back.
This entry has not yet been fully updated (first published 1885; most recently modified version published online March 2018).