Minimal pairs
adv
Freq #22053
Meanings
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1
adv
away or backward, now used chiefly in the fixed expression to and fro
The lantern swung to and fro in the wind.
Thesaurus
Etymology
From Middle English fro and fra, from Old Norse frá ("from"), related to Old English fram and modern from. Once used independently for motion away, it survives mainly in the paired expression to and fro.