You could use either "go deo" or "go síoraí". There are even more ways to say it.
Síoraí or suthain
'Sheree' is not a spelling in Irish. Síoraí is pronounced 'sheeree' and means 'everlasting, eternal'.
The word brooch in Tuck Everlasting is on page 30.
Yes Christ's word which is the Bible is everlasting and omnipresent.
The word everlasting is an adjective. It decribes something that lasts for an entirety.
page 79
Your in Irish Gaelic is: bhurthe Irish word for your is: bhur
Forever everlasting
Antonyms of the word "temporary" could be permanent, perpetual, eternal, or everlasting.
In Irish it's buanchairdeas / cairdeas síoraà In Scottish Gaelic it is .....­
αιώνιος
ever