diffident

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The Word of the Day for November 6 is: 

diffident   \DIF-uh-dunt\   adjective
     1 : hesitant in acting or speaking through lack of self-
confidence 
    *2 : reserved, unassertive 

Example sentence:
     Always diffident and soft-spoken, Tony did not raise any 
objection when the cashier overcharged him for his purchase.

Did you know?
     "Diffident" and "confident" are antonyms, but both have a 
lot to do with how much trust you have in yourself. Etymology 
reveals the role that that underlying trust plays in the two 
terms. "Confident" and "diffident" both trace to the Latin 
verb "fidere," which means "to trust." "Diffident" arose from a 
combination of "fidere" and the prefix "dis-," meaning "the 
absence of," and it has been used to refer to individuals 
lacking in self-trust since the 15th century. "Confident" arose 
from "confidere," a term created by combining "fidere" with the 
intensifying prefix "con-." That term has been used for self-
trusting souls since at least the late 16th century. By the 
way, "fidere" puts the trust in several other English words too, 
including "fidelity" and "fiduciary."

*Indicates the sense illustrated in the example sentence.