A trait you can base your life on, I think.
Highly pleasing; delightful.
'Expertive' is not a word in English. 'Expert' means someone who is very proficient at something.
The possessive form is the school's principal.
"erial" is not a standard English word. It may be a misspelling or a word in another language. Without context, it is hard to provide a precise definition.
There isn't a widely recognized meaning for the term "etsri." It may be a rare or unique word without a standard definition.
principal
The base word of 'principal' is 'prince'.
the principal or horizontal axis of a system of coordinates, points along which have a value of zero for all other coordinates.
'Leaf' is a part of a tree or bush, acting as the principal organ of photosynthesis. The name 'leaf' is also used for the pages of books.
The principal is my pal.
A word is a unit of language, consisting of one or more spoken sounds or their written representation, that functions as a principal carrier of meaning.Words are composed of one or more morphemes and are either the smallest units susceptible of independent use or consist of two or three such units combined under certain linking conditions.Words are usually separated by spaces in writing, and are distinguished phonologically, as by accent, in many languages.
they are cool people who make up rules
If you are referring to a school principal, then the answer is "skoolhoof."
The principal church of a diocese, with which the bishop is officially associated.
"I sent you to the principal because you misbehaved."
" The principal of the matter may vary"
This is your principal target. The principal goal must be achieved.