When sifting through job applications, not everyone can be a successful candidate. However, using the phrase "unsuccessful candidate" can come across as harsh and insensitive. Instead, try some of these synonyms that convey the same message with a bit more tact. You can refer to them as an "alternate candidate," "less experienced candidate," or "candidate who did not meet the qualifications." If their skills or experience simply did not align with the position, you can call them a "mismatched candidate" or a "not-quite-fit candidate." Ultimately, it's important to remember that even unsuccessful candidates are people who deserve to be treated with respect and courtesy.