Englishvacillation
noun
a decision is always easier to defend than vacillation:
dithering, indecision, indecisiveness, irresoluteness, uncertainty, unsureness, doubt, wavering, teetering, temporization, hesitation, oscillation, fluctuation, inconstancy;
British havering, humming and hawing;
Scottish swither;
informal dilly-dallying, shilly-shallying, blowing hot and cold.
vacillation Oxford Dictionary of English