the failure to do something immediately or quickly because you are nervous or not certain, or an occasion when this happens:
hesitancy to There can be a hesitancy to discuss serious issues.
hesitancy about Congress has not shown any hesitance about spending more money.
vaccine hesitancy Scientists are concerned about vaccine hesitancy (= people being nervous or not certain about having a vaccine against a disease).
His hesitancies can sometimes make him appear weak.