Membean is an incredibly effective way to learn words and permanently remember them.
Learn more on how we help for
Test Prep,
Personal Learning,
or get it for your
School.
An assiduous person works hard to ensure that something is done properly and completely.
Someone who is capricious changes their mind repeatedly or behaves in unexpected ways; a capricious series of events follows no predictable pattern.
When someone is conscientious in performing a task, they do it in a thorough and careful fashion to make sure that it is completely done.
Something that is desultory is done in a way that is unplanned, disorganized, and without direction.
When you are diligent in completing a task, you work hard or tirelessly at it until it is complete.
When you create a diversion, you cause someone to turn aside momentarily from what they are doing by distracting them.
Efficacy is the ability or power to produce an expected effect or result.
Someone who is exacting expects others to work very hard and carefully.
Someone who is feckless is incompetent and lacks the determination or skill to achieve much of anything at all in life.
Fortitude is the determination or lasting courage to endure hardship or difficulty over an extended period of time.
Someone who is impetuous does things quickly and rashly without thinking carefully first.
An impromptu speech is unplanned or spontaneous—it has not been practiced in any way beforehand.
When someone improvises, they make something up at once because an unexpected situation has arisen.
Someone who is impulsive tends to do things without thinking about them ahead of time; therefore, their actions can be unpredictable.
Something that is incessant continues on for a long time without stopping.
If someone is indefatigable, they never show signs of getting tired.
Something that happens on an intermittent basis happens in irregular intervals, stopping and starting at unpredictable times.
Intractable problems, situations, or people are very difficult or impossible to deal with.
An inveterate person is always doing a particular thing, especially something questionable—and they are not likely to stop doing it.
Someone who is irresolute is unable to decide what to do.
Someone is considered meticulous when they act with careful attention to detail.
A negligent person does not complete what they say they will do; they are careless and not attentive to their work.
An obstinate person refuses to change their mind, even when other people think they are being highly unreasonable.
If someone has pluck, they have determination and courage.
When you procrastinate, you put off or delay doing something—usually because it is something unpleasant that you’d rather not do.
If someone watches or listens to something with rapt attention, they are so involved with it that they do not notice anything else.
Refractory people deliberately don’t obey someone in authority and so are difficult to deal with or control.
A feeling of resignation is one of accepting something that you really don’t want to do.
Someone who is sedulous works hard and performs tasks very carefully and thoroughly, not stopping their work until it is completely accomplished.
If you are steadfast, you have a firm belief in your actions or opinions and refuse to give up or change them because you are certain that you are doing the right thing.
A tenacious person does not quit until they finish what they’ve started.
If you are unflagging while doing a task, you are untiring when working upon it and do not stop until it is finished.
If you are unrelenting in your desire to do something, you stop at nothing until you’ve done it.
A thing or person that is unremitting is persistent and enduring in what is being done.
When someone vacillates, they go back and forth about a choice or opinion, unable to make a firm decision.
If you waver, you cannot decide between two things because you have serious doubts about which choice is better.
Adj.
pertinacious
pur-tn-AY-shuhs
Context
Paula’s pertinacious or determined attitude towards winning the science fair required her to put in countless hours of effort. Paula’s pertinacious work ethic, insistent and unyielding, converted an otherwise daunting conception to a manageable task. Her pertinacious or persistent labor paid off as she not only won overall best project, but she also was offered a full scholarship to a highly recognized university by a representative who was visiting the fair.
Quiz:Try again!
What is a pertinacious attitude?
One that tries to win at all costs, even by cheating.
PreciousPertaining Anything pertaining to winning the Latin competition was very precious to Hannah; she would study and study, being pertinacious in her goal for winning it, so anything pertaining to Latin became precious to her.
Examples
[Alexander Hamilton's] mind was energetic and pertinacious. He thought little of sitting over a paper till the dawn dimmed his candles.
—
The Atlantic
Predictably, [Michael] Jordan, pertinacious even [while] clad in a pair of _Tennis, anyone?_ white shorts, takes on all questions in these two hours and swats them away with the same ferocity that he reject[ed] a Patrick Ewing shot during the heated 1993 Eastern Conference Finals against the Knicks.
—
Sports Illustrated
When one is pertinacious while performing a task, one is “inclined to thoroughly hold” onto it until it is completely done.
Word Theater
Microcosmos This beetle pertinaciously pushes its pellet—no matter the obstacle.
The panel shows a small video clip of either the word in actual use or a scene that represents the meaning of a word. This not only breaks up the monotony of studying words but also provides another avenue to strengthen word meaning. Enjoy!
Word Constellation
Click for an interactive map of this word
Related Words
assiduous ·
conscientious+ ·
diligent+ ·
efficacy ·
exacting ·
fortitude+ ·
incessant+ ·
indefatigable ·
intractable ·
inveterate ·
meticulous ·
obstinate ·
pluck ·
rapt ·
sedulous ·
steadfast ·
tenacious ·
unflagging ·
unrelenting+ ·
unremitting ·
capricious ·
desultory ·
diversion+ ·
feckless ·
impetuous ·
impromptu+ ·
improvise ·
impulsive+ ·
intermittent+ ·
irresolute ·
negligent+ ·
procrastinate+ ·
refractory ·
resignation+ ·
vacillate ·
waver ·
Similar sense
Opposite sense
Word Variants
pertinacity
n
→
very persistent or determined
The section lists important variants and alternate definitions of the headword. Knowing variants will often help you both remember and understand the word. Not all variants are listed - only the ones we think that are important for you to know.