Slack Family History
Slack Name Meaning
English and Dutch: nickname for an idle person from Middle Dutch slac Middle English slak ‘lazy careless slow’ (Old English slæc). English: from Middle English slak ‘small shallow valley hollow in the ground’ (Old Norse slakki). The surname may be topographic for someone who lived in or by a shallow valley or hollow or habitational for someone from any of numerous minor places so named principally in Derbyshire Yorkshire and Lancashire. Americanized form of Slovenian Slak 1 and perhaps also of Czech Šlak (see Slak ). Americanized form of Czech Slach: from the personal name Slach a pet form of names beginning with Sla- e.g. Slavomír.
Source: Dictionary of American Family Names 2nd edition, 2022