I need to define the words objurgate,ochlophobia,opsimath,obscurant and otiose for my homework.Is there a way you can help me

1. rebuke severely; scold.
"the old man objurgated his son"

2. ochlophobia

• extreme or irrational fear of or aversion to crowds.

3.opsimath
a person who begins to learn or study only late in life.

4.obscurant
One who opposes intellectual advancement and political reform.a) Characterized by opposition to intellectual advancement and political reform.
b)Tending to make obscure: an obscurant bank of clouds

5.otiose

1. serving no practical purpose or result.
   
   "there were occasions when I felt my efforts were rather otiose
   
2. indolent or idle.