preferably
adv.used to say what you would like best if you have a choice. It shows your first or ideal option.
adv.indicates a preference for one option over others; ideally. Used to specify a desired condition or choice within a range of possibilities.
“I would like a window seat, preferably on the left side.”
“The company is looking for a new manager with five years of experience, preferably in the tech industry.”
“Applicants should submit their portfolios in a digital format, preferably as a single compressed file to ensure all assets remain together during the review process.”
Often functions as a sentence adverb or a disjunct, typically set off by commas or placed at the end of a clause to modify the entire proposition.
From preferable + -ly.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.