This question has to do with opposite forms of regular adjectives by adding prefixes such as il, in, im, ir, etc. So here they are:
1. illaudable = not worthy of praise; opposite of laudable, which is worthy of praise
2. illiterate = unable to read or write; opposite of literate, which is able to read or write
3. invincible = cannot be conquered; this adjective does not exist without the prefix
4. encoded = locked in code form; means the same as coded
5. illogical = not making good sense; opposite of logical, which means to make sense
6. impatiently = not willing to wait; opposite of patiently, which means willing to wait
7. indoctrinate = to give teaching or instruction to another; this verb doesn't have its opposite
8. irresistible = not able to stand against; opposite of resistible
9. irresponsible = not someone to be depended upon; opposite of responsible, or reliable
10. irrelevant = does not apply; opposite of relevant