Humans use only 10% or less of their brain: Even though many mysteries of brain function persist, every part of the brain has a known function. I.E. the whole thing.

Cut it off.

Ignore that. Put it on ice as much as possible and rest it up. If you have a little brace for it, wear that or buy one.

synced - informal noun - To synchronize.

synchronized, sync is an abbreviation.

American Heritage Dictionary says it can be synched or synced

Then there is "Syncopated", like in syncopated rhythm.

there is better room on the bart car. avoid making ladies go tumbling while trying to enter the car.

I can't find out exactly why, but someone claims it is an anti-terrorist deal. They might be joking though.