Word: nonterrible
Part of speech: Adjective
Syllables: non
te
rri
ble
Definition: Not terrible; decent, acceptable.
Morphemes:
Affix: non-
Language: en
PoS: Prefix
Meaning: Used in the sense of no or none to show lack of or failure to perform; or in the sense of not to negate the meaning of the word to which it is prefixed.
Etymology Compounds: Affix: nōn
Language: ML.
Decoded: non
Meaning: not
Affix: terrible
Language: en
PoS: Adjective
Meaning: Unpleasant; disagreeable.
Etymology Compounds: Affix: terreō
Language: la
Decoded: terreo
Meaning: I frighten, terrify, alarm; I deter by terror, scare 
Affix: -ibilis
Language: la
Decoded: -ibilis
PoS: Suffix
Meaning: -able; able or worthy to be (the recipient of an action).