"hesitation" in the noun sense
1. hesitation, vacillation, wavering
indecision in speech or action
2. reluctance, hesitancy, hesitation, disinclination, indisposition
a certain degree of unwillingness
"a reluctance to commit himself"
"his hesitancy revealed his basic indisposition"
"after some hesitation he agreed"
3. hesitation, waver, falter, faltering
the act of pausing uncertainly
"there was a hesitation in his speech"
Source: WordNet® (An amazing lexical database of English)
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