Nonsense
The prefix that can be added to the word "sense" to indicate that something doesn't make sense is "in-".
The prefix for foolish or no sense is "non-" or "un-".
Nonsense
sensor, sensed, sensing, sensitive, sensation, sensational, sensibility, sensate
InSence
the prefix means 'sight' in the sense of stereopsis seeing solid objects
Cause is not a prefix. A prefix needs to be a sound or combination of sounds which does not make sense on its own. Cause is a word.
ir- as in irresponsible
One common suffix for "sense" is "-less," which means without the quality of "sense" such as in "senseless."
The prefix "mis-" is of Latin origin. It is commonly used to indicate a sense of wrongness or badness.
Well unhappy itself is not a prefix but, unhappy has a prefix and that is "un" because, the word makes sense with out un in it and un turns happy into not happy so this word has a prefix you dumbhole.
The prefix of "nonsense" is "non-." In linguistics, a prefix is an affix which is placed before a base word to modify its meaning. In this case, the prefix "non-" indicates negation or absence, so when added to "sense," it forms the word "nonsense," meaning something that lacks sense or meaning.