ripple

[1]	ruffle , ruffle , riffle , purl , undulate , cockle , undulate , wave , splash , wash , (US) riffle
[2]	babble , guggle , burble , bubble , gurgle

[1]	rippling , wavelet , wave , riffle , wavelet , ruffle , ruffling , cat's-paw , purl , purling , undulation , (US) riffle , riffling
[2]	(slight) disturbance , upset , perturbation , agitation , flurry , flutter , suggestion , hint