
Fro
Archaic Usage
The adverb 'fro' is old-fashioned and rarely used in modern English.

Grandfather would sometimes speak of his youth, moving 'to and fro' in the old village.
Physical Motion
'Fro' describes physical movement that goes back to its starting point.

The pendulum swung 'to and fro', hypnotically.
Mental State
It can indicate a state of indecision or anxiety.

Her thoughts raced 'to and fro', unable to settle.
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