HackerVoca

useful : serviceable, advantageous, profitable, beneficial
***** (V) *****


ineffective : empty, devoid, destitute /adjective

1 having no money, no food, and nowhere to live: Many people were so destitute they lived out of garbage cans.

2 be destitute of formal to be completely without something: a man destitute of all compassion

destitution noun [uncountable]

vacant : empty, void, unoccupied
vacant : unoccupied
vagabond : wandering, nomadic, vagrant
vague : indefinite, unspecified, obscure1 / adjective

1 not at all well known and usually not very important: an obscure poet | The exact origin of the paisley design is obscure.

2 difficult to understand: obscure legal phrases

obscurely adverb , uncertain, indistinct, dim, unsettled
vain : useless, worthless, trifling, trivial, unavailing, futile