I am just about the processes of writing a short story and I am looking for a word/phrase that can properly describe a departure, without a destination(I am not going to specify anything to reflect the tone and theme of my story) that is just taken based on whim and for self discovery purposes. Is there a good way of describing something like this?

Since I don't know the context of your story... ????

You might say the character boarded a train not knowing where it was going...or started driving on a highway that was unfamiliar...or stowed away on a tramp steamer...any mode of transport that you choose, as long as the destination is unknown.

Or -- She stomped out, slamming the door, and disappeared into the darkness.

The stranger slipped into the fog and was hidden from sight.

Certainly! It sounds like you're looking for a word or phrase that captures the idea of a departure without a defined destination, driven by whim and the desire for self-discovery. One possible term you could consider is "wanderlust."

"Wanderlust" is a noun that describes a strong desire to travel, explore, and experience new things. It often implies a sense of adventure, curiosity, and a willingness to follow one's instincts and desires without a specific purpose in mind. In your short story, you could use "wanderlust" to convey the protagonist's urge to depart and embark on a journey of self-discovery without any set destination or predetermined path.

To find additional words or phrases that align with the desired tone and theme of your story, you can utilize various resources:

1. Thesaurus: A thesaurus is a valuable tool for finding synonyms and related words. You can use online thesaurus websites or consult a physical thesaurus to explore alternative words that evoke a sense of aimless departure or self-discovery.

2. Writing prompts: Look for writing prompts or exercises that specifically focus on themes such as adventure, self-discovery, or the search for purpose. These prompts may provide you with inspiration for words or phrases that suit your story.

3. Read similar stories: Explore short stories, novels, or essays that tackle themes similar to yours. Observe how authors in those works describe departures or journeys without specific destinations to gain ideas and inspiration for the words or phrases you are seeking.

Remember, the choice of words ultimately depends on your narrative style, the voice of your characters, and the atmosphere you want to create within your story. Experiment with different options and consider what best captures the essence you wish to convey.