Which term describes someone who is shy and timid?

The term "diffident" precisely captures the characteristics of being shy and timid. It derives from the Latin word "diffidere," which means to lack confidence. A diffident person often exhibits a low level of self-assurance and may be hesitant to engage in social interactions due to their insecurity or fear of judgment. This aligns well with the description of someone who is shy.

In contrast, the other terms do not convey this meaning. "Dichotomy" refers to a division into two contrasting parts, which is unrelated to personality traits. "Desultory" means lacking a plan or purpose, often characterized by inconsistency, while "diatribe" indicates a forceful and bitter verbal attack. None of these terms imply shyness or timidity, making "diffident" the only fitting choice.