What is a fancy word for "adjustment"?

A fancy word for adjustment depends on context and tone you want to convey. Formal synonyms include modification, alteration, adaptation, recalibration, realignment, accommodation, regulation, rectification, and refinement. In business or finance, adjustment might be called reconciliation, amendment, or revision. In mechanical context, adjustment could be called calibration or fine tuning. In personal context, adjustment to new situation could be called acclimatization, adaptation, or assimilation. For elegant writing, you might use modification for general change, adaptation for adjusting to environment, recalibration for precise correction, realignment for bringing back into proper order, or refinement for small improvement. For example, instead of saying make an adjustment to plan, you could say make a modification or refinement to plan. In psychology, adjustment might be called adaptation or acclimation. Choosing fancy word depends on whether you want to emphasize precision, improvement, or conformity, so words like recalibration and realignment sound more technical and sophisticated than simple adjustment.