ripple - noun

a small wave on the surface of a liquid

(electronics) an oscillation of small amplitude imposed on top of a steady value

ripple - verb

• stir up (water) so as to form ripples
• flow in an irregular current with a bubbling noise

ripple - thesaurus

babble   bubble   burble   cockle   guggle   gurgle   riffle   rippling   ruffle   undulate   wavelet