Old English scamleas "shameless, impudent, immodest;" see shame (n.) + -less. Related: Shamelessly; shamelessness. Similar formation in Old Norse skammlauss, Dutch schaamteloos, Old High German scamalos, German schamlos.
a shameless imposter
shambles
shambolic
shame
shamefaced
shameful
shameless
shammy
shampoo
shamrock
shamus
shan't
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