The foundation of a word, to which a suffix or prefix is added-usually the middle of the word and its central meaning
The root "cred" comes from the verb "credere" which means "to believe, trust."
The root word of credulous is "cred" as in credit and credible.
The root word is "cred," which is also found in "credit" and "credible." It's associate with trust or reliance.
The root syllable 'cred-' is the basis for the verb credere, which means 'to believe, to trust'. It also is the basis for the adjective credibilis, which means 'worthy to be believed'. And it's the basis for another adjective, credulus, which means 'believing easily'.
Good that you thought of it... unfortunately there is no root word of function... because if you think of it for a long time... function is word...so there's no word go with function, so, if you say functional, the root or base word is function. :):
The syllable 'cred-' is the root of 'credo'. The verb 'credo' is the first person singular form of the present indicative. It means 'I believe'. Its form in the infinitive is 'credere'.
belief
Assuming you mean cred- as in incredible, credibility, etc., it comes from the Latin word credere (to believe).
The Latin word 'credo' is the root, which means 'I believe'. Hence 'credible' means believable and 'incredible' negates it and means unbelievable. Likewise 'credibly' and 'incredibly' have the same root and mean believably and unbelievably.
credence credit credulous credonkulous
To believeSome examples of words using this root are:creed: something you believe inincredible: unbelievableincredulous: Not believing is something; skepticalcredible: believable
credendum, credence, credential, credenza, credibility, credible, credibly, credit, credulity, credulous, incredibility, incredible, incredulous, incredulity