diffidence

As a noun diffidence

is the state of being diffident, timid or shy; reticence or self-effacement.

As an adjective ostentatious is

of ostentation.

Diffidence is a synonym of doubt.

In obsolete|lang=en terms the difference between diffidence and doubt

is that diffidence is (obsolete) mistrust, distrust, lack of confidence in someone or something while doubt is (obsolete) to fill with fear; to affright.

As nouns the difference between diffidence and doubt

is that diffidence is the state of being diffident, timid or shy; reticence or self-effacement while doubt is uncertainty, disbelief.

As a verb doubt is

(ambitransitive) to lack confidence in; to disbelieve, question, or suspect.

As nouns the difference between humility and diffidence

is that humility is the characteristic of being humble; humbleness in character and behavior while diffidence is the state of being diffident, timid or shy; reticence or self-effacement.

Bashfulness is a synonym of diffidence.

As nouns the difference between bashfulness and diffidence

is that bashfulness is the quality or property of being bashful; shyness; reserve; timidity while diffidence is the state of being diffident, timid or shy; reticence or self-effacement.

As nouns the difference between megalomania and diffidence

is that megalomania is a psychopathological condition characterized by delusional fantasies of wealth, power, or omnipotence while diffidence is the state of being diffident, timid or shy; reticence or self-effacement.

As nouns the difference between diffidence and confidence

is that diffidence is the state of being diffident, timid or shy; reticence or self-effacement while confidence is passive self-assurance.

As an adjective modest

is not bragging or boasting about oneself or one's achievements, unpretentious, humble.

As a noun diffidence is

the state of being diffident, timid or shy; reticence or self-effacement.

As nouns the difference between diffidence and diffidency

is that diffidence is the state of being diffident, timid or shy; reticence or self-effacement while diffidency is .

As nouns the difference between taxonomy and diffidence

is that taxonomy is the science or the technique used to make a classification while diffidence is the state of being diffident, timid or shy; reticence or self-effacement.