Preliminary
Preparatory
Synonyms: Preparatory, initial, prefatory, preceding, initiatory, early, exploratory, test, experimental, precursive, prodromic, prelusive, qualifying, introductory, opening, prior, lead-in, precursory, advance, pilot, trial, explorative, prodromal, preludial, prelusory, and eliminating.
Prelude
Synonyms: Prelude, preliminary action, groundwork, preparation, overture, and first round.
Introduction
Synonyms: Introduction, opening, formalities, preamble, and opening/prefatory remarks.
Example Sentences
The preliminary results were promising.
She gave a preliminary overview of the findings.
Preliminary talks began between the two nations.
The preliminary exam is scheduled for next week.
His preliminary sketches impressed the committee.
The preliminary investigation revealed key evidence.
We held a preliminary meeting to discuss goals.
The preliminary data suggest a positive trend.
They reached a preliminary agreement.
A preliminary draft was submitted for review.