unpromising

US /ʌnˈprɑː.mɪ.sɪŋ/
UK /ʌnˈprɑː.mɪ.sɪŋ/
1.

Không hứa hẹn

Something that is unpromising does not show any signs that it will be enjoyable or successful:

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The car broke down, which was an unpromising start to the vacation.