All ineffective antonyms
in·ef·fec·tive
I i adjective ineffective
- expert — A person who has a comprehensive and authoritative knowledge of or skill in a particular area.
adj ineffective
- fruitful — producing good results; beneficial; profitable: fruitful investigations.
- potent — (of a cross) having a crosspiece at the extremity of each arm: a cross potent.
- productive — having the power of producing; generative; creative: a productive effort.
- profitable — yielding profit; remunerative: a profitable deal.
- successful — achieving or having achieved success.
- useful — being of use or service; serving some purpose; advantageous, helpful, or of good effect: a useful member of society.
- valuable — having considerable monetary worth; costing or bringing a high price: a valuable painting; a valuable crop.
- worthwhile — such as to repay one's time, attention, interest, work, trouble, etc.: a worthwhile book.
- worthy — having adequate or great merit, character, or value: a worthy successor.
- adequate — If something is adequate, there is enough of it or it is good enough to be used or accepted.
- capable — If a person or thing is capable of doing something, they have the ability to do it.
- competent — Someone who is competent is efficient and effective.
- skillful — having or exercising skill: a skillful juggler.
- efficient — (esp. of a system or machine) Achieving maximum productivity with minimum wasted effort or expense.
- sufficient — adequate for the purpose; enough: sufficient proof; sufficient protection.
- dexterous — Someone who is dexterous is very skilful and clever with their hands.
- effectual — producing or capable of producing an intended effect; adequate.
- powerful — physically strong, as a person: a large, powerful athlete.
- able — Someone who is able is very clever or very good at doing something.
- fit — adapted or suited; appropriate: This water isn't fit for drinking. A long-necked giraffe is fit for browsing treetops.
- effective — adequate to accomplish a purpose; producing the intended or expected result: effective teaching methods; effective steps toward peace.
- strong — having, showing, or able to exert great bodily or muscular power; physically vigorous or robust: a strong boy.