(further off, furthest off)
1.
If you describe a moment in time as ~, you mean that it is a long time from the present, either in the past or the future.
In those ~ days it never entered anyone’s mind that she could be Prime Minister...
Agreement is even further off.
= distant
ADJ
2.
If you describe something as ~, you mean that it is a long distance from you or from a particular place.
...stars in far-off galaxies.
ADJ
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Far off is also an adverb.
The band was playing ~ in their blue and yellow uniforms.
ADV: ADV after v