Question

roots and affixes
some common affixes:
prefixes
in - also il -, im -: not, without
e.g.: infertile, inappropriate, impossible
un -: not
e.g.: unacceptable, unreal, unhappy, unmanned
suffixes
-or: one who
e.g.: trainer, protector
-ity: quality of
e.g.: veracity
-sion: state of being
e.g.: concession, transition
-ize: become
e.g.: civilize
-able: capable of being
e.g.: edible, presentable
-ic: pertaining to
e.g.: musical, mythic
what is the meaning of validity in the following sentence?
you should check the validity of your source.
validity means becoming true.
validity means one who is not false.
validity is a quality of being accurate or valid.

Explanation:

The suffix -ity indicates the quality of something. In the word "validity", "valid" means accurate or well - founded, and adding the suffix -ity makes it a noun representing the quality of being valid.

Answer:

Validity is a quality of being accurate or valid.