Redly \r(e)-dly, red-ly\ as a boy's name is a variant of Redley (Old English), and the meaning of Redly is "red meadow".
The baby name Redly sounds like Radly and Ridly. Other similar baby names are Hedly, Ardly, Hadly, Hedley, Headly, Radley, Rawly, Redlea, Redd, Reilly, Ridley, Riply, Risly, Roddy, Rolly, Rowly, Rudy, Rudey and Wadly.