---

Definition/Meaning

(adjective)

producing or being able to produce an intended or desired result;

e.g. The researchers worked long hours to find an effectual new therapy for the condition.

---

---

Similar Words

Effective

Efficacious

Efficient

Efficiently

Fruitful

Hyperefficient

Operative

Potent

Productive

Serving

Sure-handed

Ultraefficient

---

Opposite Words

Abortive

Barren

Bootless

Candle

Counterproductive

Empty

Fruitless

Futile

Hollow

Idle

Incapable

Incompetent

Ineffective

Ineffectual

Inefficient

Inexpert

Inoperable

Inoperative

Kaput

Nonfunctional

Nonfunctioning

Nonoperating

Nonproductive

Pointless

Unavailing

Unfruitful

Unproductive

Unprofitable

Unqualified

Unseasoned

Unskilled

Unskillful

Unsuccessful

Useless

Vain

Worthless

---

Related Words

Accomplished

Ace

Active

Adept

Adequate

Alive

Applicable

Capable

Cogent

Competent

Complete

Consummate

Convincing

Crack

Crackerjack

Dynamic

Educated

Expert

Feasible

Functional

Functionality

Going

Good

Great

Hyperefficient

Killer

Live

Liver

Living

Master

Masterful

Masterly

On

Online

Operating

Operational

Operative

Practicable

Practical

Practiced

Professed

Proficient

Running

Skilled

Skillful

Sound

Striking

Telling

Ultraefficient

Usable

Useful

Valid

Versed

Veteran

Virtuoso

Workable

Working

---

Comments

---