Likely to be a hindrance; disadvantageous:
Hostile or disparaging; malicious:
Not likely; improbable; not to be reasonably expected; as, an unlikely event; the thing you mention is very unlikely. Not holding out a prospect of success; likely to fail; unpromising; as, unlikely means.
Find another word for unpromising. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for unpromising, like: adverse, discouraging, unfavorable, negative, unlikely, inauspicious, incongruous and innocuous.