RHYMING RIDDLE ANSWERS XVIII

The answers to each item in the clues will rhyme.

1. Unchanging, Unpredictable, Forceful - as in speech, Puzzling

2. Dangerous, Complaining-whining, Excessively talkative, How we all wish the world could be

3. Grotesque, Tending to arouse ill will, Slowly but surely causing harm -as a disease, Deceitful

4. Old-fashioned - out of use, Art form using small tiles, Common, Certain kind of math problem

Answers:

1. Static, Erratic, Emphatic, Enigmatic
2. Perilous, Querulous, Garrulous, Terrorless
3. Hideous, Invidious, Insidious, Perfidious 
4. Archaic, Mosaic, Prosaic, Algebraic