unsuccessful

Unsuccessful is a related term of trifling.

As adjectives the difference between unsuccessful and trifling

is that unsuccessful is failed, not successful while trifling is trivial, or of little importance.

As a noun trifling is

the act of one who trifles; frivolous behaviour.

Idle is a related term of unsuccessful.

As adjectives the difference between idle and unsuccessful

is that idle is (lb) empty, vacant while unsuccessful is failed, not successful.

As a verb idle

is to spend in idleness; to waste; to consume.

As adjectives the difference between unsuccessful and ineffective

is that unsuccessful is failed, not successful while ineffective is not having the desired effect; ineffectual.

Unsuccessful is a related term of nugatory.

As adjectives the difference between unsuccessful and nugatory

is that unsuccessful is failed, not successful while nugatory is trivial, trifling or of little importance.

As adjectives the difference between valueless and unsuccessful

is that valueless is having no value while unsuccessful is failed, not successful.

Profitless is a related term of unsuccessful.

As adjectives the difference between profitless and unsuccessful

is that profitless is not yielding profit while unsuccessful is failed, not successful.

Unsuccessful is a related term of worthless.

As adjectives the difference between unsuccessful and worthless

is that unsuccessful is failed, not successful while worthless is not having worth and use, without value, inconsequential.

Unsuccessful is a related term of empty.

As adjectives the difference between unsuccessful and empty

is that unsuccessful is failed, not successful while empty is devoid of content; containing nothing or nobody; vacant.

As a verb empty is

(ergative) to make empty; to void; to remove the contents of.

As a noun empty is

a container, especially a bottle, whose contents have been used up, leaving it empty .

Bootless is a related term of unsuccessful.

As adjectives the difference between bootless and unsuccessful

is that bootless is without boots or bootless can be profitless; pointless; unavailing while unsuccessful is failed, not successful.

Unprofitable is a related term of unsuccessful.

As adjectives the difference between unprofitable and unsuccessful

is that unprofitable is not making a profit while unsuccessful is failed, not successful.