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Use "thornless" in a sentence
"Prickly wild brambles can be tamed by whacking back the edges of the thicket twice a year, and modern cultivated varieties such as thornless 'Triple Crown' blackberry make great thickets, too."
"I did have a ‘Zepherine Drouhin, ’known for its thornless qualities and its ability to take some shade, but it only blooms once a year — for a week or two in the spring — and then it gets heavily infected with black spot."
"If it is a love at first sight, then a thornless rose or lavender rose will speak of your complete surrender."