old age, age-old

Old age or old age means the retirement years; the years after age 65 --
He's saving money for his old age.
We have to eat healthy food now so that we won't be decrepit in our old age.

Age-old or age-old means traditional, or from time immemorial --
No one knows the origin of these age-old customs.
The yule log is an age-old practice, still common in rural areas.

Now that you know that, you can say --
"In his old age, he liked to remember some of the age-old things his parents had taught him about the land, and how to care for it."

Note--"old adage" means an old saying or proverb --
He can quote an old adage for every situation.

inconstant, in constant

Inconstant or inconstant ( one word ) means variable or fickle, not dependable --
"O, swear not by the moon, the inconstant moon, That monthly changes in her circle orb..."
He often tired of her inconstant temperament.

In constant or in constant ( two words ) describes a state or condition ( in ) that is regular, unchanging, or faithful ( constant ) --
"In constant sorrow through his days..."
They lived in constant fear that someone would find out their awful secret.

Now that you know that, you can say --
"She lived in constant dread of his inconstant moods."

scroll, scrawl

Scroll or scroll means a roll of paper or some other material, with writing or a picture on it --
The archaelogist found an ancient scroll, written in an unknown language.
 He brought home a silk scroll with a painting of birds on it.

Scroll may also mean to move a digital image up, down, left, or right on the screen --
Scroll down to continue reading.
Scroll to the left using your mouse; just drag the arrow at the bottom of the page.

Scroll may be used to describe something shaped like a roll of paper --
It looks like the scroll on a violin.

Scrawl or scrawl means hurried or sloppy handwriting --
His scrawl is nearly impossible to decipher.
No one could imitate his distinctive scrawl.

Scrawl also means to write carelessly or sloppily --
When I'm in a hurry I scrawl across the page, but I can't always decipher it later.

Now that you know that, you can say --
"This scroll has nothing on it but an illegible scrawl, left here long ago."

whittle, wittol

Whittle or whittle means to cut small pieces from a stick with a knife, usually to make a shape of some kind --
He won't do anything but sit on the porch and whittle; I don't know what's wrong with him.
He's trying to whittle a bird, but it doesn't look like much yet.

Whittle may also be used figuratively, to means chipping or paring away at a task or problem --
You will get a lot done if you whittle away at the job, a few minutes each day.

Wittol or wittol ( rhymes with whittle ) means a husband of an unfaithful wife, one who knows about and  puts up with his wife's infidelity --
They called him a wittol behind his back, but spoke politely to his face.
The old wittol doesn't care what his wife does, as long as she doesn't make a show of it.

Now that you know that, you can say --
"He's become an old wittol, who only wants to sit in the sun and whittle."

injection, interjection

Injection or injection means introducing a liquid into the body with a hypodermic needle --
One quick injection and you'll be safe from the flu for another year.
He'll become drowsy a few minutes after the injection.

Injection may also mean the introduction of something new or unexpected, figuratively --
He hoped that an injection of humor might save the situation.

Interjection or interjection means an emotional outburst or remark, or a word used alone, to express emotion, that doesn't otherwise alter the meaning of what is said or written --
His every sentence is preceded by an unprintable interjection.
That interjection seems out of character; our heroine wouldn't say "OMG!"

Now that you know that, you can say --
"He's had an injection of painkillers, and now his only words are the interjection "uh-oh".

here with, herewith

Here with or here with ( two words ) means in this place or at this point ( here ) in the company of, or in possession of ( with ) --
We left him here with the packages; where do you think he is now?
Put your coat here with mine.

Herewith or herewith ( one word ) means included with this, or by means of this --
I herewith send you a copy of the accident report.
My check for the balance is enclosed herewith.

Now that you know that, you can say --
"He stayed here with some old friends; please find herewith a copy of his will. "

feeble, febrile

Feeble or feeble means weak or debilitated, literally or figuratively --
He is getting old and feeble; he needs help to get around.
He made a feeble protest, but went along in the end.

Febrile or febrile means feverish, related to or caused by fever, physically or mentally--
A temperature that high can cause a febrile seizure.
His suspicions are the product of his febrile imagination.

Now that you know that, you can say --
"He is still feeble after a week in the hospital with an unknown febrile illness."