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English word offski comes from English off, English -ski
off (English)
(transitive, Singapore) to switch off. (transitive, slang) to kill (cricket) In, or towards the half of the field away from the batsman's legs; the right side for a right-handed batsman.. (of a dish on a menu) presently unavailable. Circumstanced (as in well off, better off, poorly off).. Designating a time when one is not strictly attentive to business or affairs, or is absent from a post, [...]
-ski (English)
(US, informal, humorous) Added to a word, name, or phrase to invoke Russianness or Polishness.
offski (English)
(Scotland, Northern England, colloquial) to leave, depart, set off (Scotland, Northern England, colloquial) leaving, on one's way. (colloquial, Scotland, Northern England) away, not here, off.