“Ailing” means in pain, sick or suffering, so it is a synonym for “hurt;” therefore, in order to solve this analogy you have to find the best synonym for “rejuvenating;” the correct answer is “healing.” To help you figure this out, the prefix ail- means related to sickness or pain and the word fragment -juve- means related to youth or, in this instance, related to regaining youth and health. To provide further help, ancient means old.

The prefix cent- means related to the number one hundred. A “centipede” is an insect that has one hundred legs, so to solve this analogy you have to determine what a “century” has one hundred of. The correct answer is “years,” there are one hundred years in a “century.”

“Paternal” means relating to fatherhood. So, to solve this analogy, you have to figure out which of these answer choices means relating to motherhood. The correct answer is “maternal.” The prefixes "pat-" and "mat-" usually suggest that the word will be related to men and related to women, respectively. As for the other answer choices, “matrimony” means marriage and “augment” means enhance or make better.

“Juvenile” means young or immature. So, to solve this analogy, you have to determine which answer choice is closest in meaning to "old." The correct answer is “ancient.” The prefix ­"juv-" means having to do with youthfulness and immaturity. To provide further help, “terminate” means end and “terminal” means causing an end or causing death. As you can see, the prefix "term-" means related to ending. To provide additional clarification, a “patriarchy” is a society dominated by men and a “matriarchy” is a society dominated by women. The prefix "patr-" means related to men and the prefix "matr-" means related to women.

“Primary” means coming first or occurring first, so to solve this analogy, you have to determine which number is associated with the word “tertiary.” The correct answer is “three.” Although the prefix ­"ter-" is a little different than the prefix ­"tri-," they both mean related to the number three.

The prefix "mono­-" means related to the number one, and the prefix "poly-" means related to more than one or related to many. In this instance, that information would be enough for you to solve this problem. However, further clarification will be helpful for other problems. A “monosyllabic” word is a word that has one syllable, and a "polysyllabic" word is a word that has more than one syllable. So, "red" and "blue" are each monosyllabic words, and "yellow" and "color" are each polysyllabic words.

To be “charming” is to be pleasing in an attractive way. “Charming” is also the opposite of “repelling.” You can tell that the opposite of “attractive” is “unattractive,” as it has the prefix "un-," which usually adds the meaning not to a word. To help you, “disinterest” is a lack of concern or little concern, and “disarming” means tending to remove any feelings of unfriendliness or distrust,so it is similar to “charming.” “Contrary” means being the exact opposite of something else or not favorable or helpful, and “amoral” is having or showing no concern about whether behavior is morally right or wrong.

The key to linking these words is to look at their prefixes. “Overwhelmed” is to be overcome with feelings, whereas “underwhelmed” is to have a lack of feelings for something. The equivalent of pair of words for "educated" would be “overeducated” and “undereducated.” To further help you, if something is “educational,” it can be used to teach something, “uneducational” is the opposite of this. A person who is “educated” has learned information to a significant degree. If you are “re-educated,” you are taught the same information again or you are taught new information which is different from what you had previously been taught.

A “diameter” is a line running through the center of a circle from one side to the other. A “radius” is half the diameter, so to solve this analogy you have to determine which answer choice means half a circle. The correct answer is “semicircle.” The prefix "semi-" means half and the prefix "dia-" means through, across, over. To provide further help, the “circumference” is the length around the outside of a circle; a “sphere” is a three-dimensional circle; “parallel” means running alongside, having the same slope; “perpendicular” means running on opposite slopes and is the opposite of "parallel." 

“Infancy” is the state of being a baby. Similarly, "adolescence" is the state of transitioning from childhood to adulthood, or the state of being a "teenager."