1.
1) informal; 4) impolite; 7) unfrienldy; 10) unrespectful;
2) unsatisfied; 5) unpractical; 8) inefficient; 11) impatient;
3) dishonest; 6) inconsiderate; 9) unimportant; 12) inappropriate.
2. 1) ... dishonest.
2) ... impatient.
3) ... unfriendly.
4) ... unpractical.
5) ... impolite.
6) ... unsatisfied.
