How to spell TETRERED correctly?

The correct spelling for "tetrered" appears to be "tethered". The word refers to something being tied or secured in place. If you come across the misspelling "tetrered", it is advisable to consider "tethered" as the intended term.

• Tethered The kite was tethered to a stake in the ground to keep it from flying away.
• Tetrad During cell division, chromosomes arrange themselves in a tetrad formation.

Attenttion

• attention
• attentions
• attenuation
• inattention