HESITANCY

reluctance, hesitancy, hesitation, disinclination, indisposition

(noun) a certain degree of unwillingness; “a reluctance to commit himself”; “his hesitancy revealed his basic indisposition”; “after some hesitation he agreed”

hesitance, hesitancy

(noun) a feeling of diffidence and indecision about doing something

Source: WordNet® 3.1

Etymology

Noun

hesitancy (countable and uncountable, plural hesitancies)

A pausing or halting before beginning a task, often as a result of some fear or uncertainty about the outcome.

vaccine hesitancy.

Source: Wiktionary

Hes"i*tan*cy, n. Etym: [L. haesitantia a stammering.]

1. The act of hesitating, or pausing to consider; slowness in deciding; vacillation; also, the manner of one who hesitates.

2. A stammering; a faltering in speech.

Source: Webster’s Unabridged Dictionary 1913 Edition