Protector.
Newer.
Freer
CALENDAR : a list of days or months, a schedule (cannot be spelled -er)
The comparative of heavy is "heavier" (having more weight).
Protector.
He has = Er hat
Happier
Newer.
Freer
Er
Just like that.
The correct spelling of at-er-on-dex is the Adirondacks, a country-like region of North America.
endoplasmic reticulum
exhilarating
w a t er sign.
It is correct as carry ons or carry-ons.