1) Callow -Immature; lacking adult perception, experience, or judgment.
2)inculcate: to teach and impress by frequent repetition or instruction.
3)nonagenarian-someone whose age is in the nineties.
4)permeate: to spread or diffuse through.
5)irascible: easily provoked to anger; easily agitated
6)neophyte: a novice
7)disheveled:in loose disorder; disarranged.
8)lacuna: a blank space; a missing part.
9)arcanum: a secret; a mystery.
10)upbraid: to scold or criticize harshly.
11)remonstrate: to present and urge reasons in opposition.
12)canorous: melodious; musical.
13)temerarious: reckless; rash.
14)fallible: liable to make a mistake.
15)copacetic:very satisfactory.
16)ineffectual: without effect; weak; useless.
17)aberrant: abnormal.
18)ersatz: being a substitute or imitation.
19)abominate: to detest intensely.
20)nettlesome: causing irritation, vexation, or distress.