Temporary expedient refers to a short-term solution that addresses a problem or situation. Synonyms for this phrase include stopgap measure, band-aid solution, quick fix, makeshift solution, or interim solution. These terms all suggest that the solution is not a permanent fix and may not be ideal, but it is adequate for the present circumstances. A stopgap measure or band-aid solution may be used until a more permanent solution can be found. A quick fix or makeshift solution is improvised or done hastily. An interim solution is used temporarily until a better solution can be implemented. Overall, these synonyms convey a sense of impermanence and suggest a need for a more comprehensive or long-lasting solution in the future.