From Vulgar Latin *excloppus (compare Romanian șchiop, Aromanian shcljop), from Late Latin cloppus. <span class="searchmatch">șcľop</span> lame, limping ^ https://www.dex.ro/%C8%99chiop...
stolp-, stloph-, stopl-, stlopl-, stop-, strop-, stropp-, troph-, sclopp-, <span class="searchmatch">sclop</span>-, schlopp-, scolpp-, scloppl-, scoph-. Since original /tl/ in Latin eventually...