Chiefly British Dialect. immediately; quickly.
verb (used with object)
Scot. to hurry; hasten.
Origin of swith
before 900; Middle English (adv.), Old English swīthe strongly, equivalent to swīth strong (cognate with German geschwind, Old Norse svinnr fast, Gothic swinths strong) + -e adv. suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019