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Words that start with the ad prefix

This collection focuses on words that begin with the ad- prefix, a Latin root that generally means 'to' or 'toward.' It's designed for students learning prefixes, test-takers building academic vocabulary, and word lovers who want to see the prefix at work in real words.

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Words that start with the ad prefix

28 words
WordMeaningIn a sentenceSave
adaptverbTo change, or change something, to fit a new situation or purpose.We adapted the game so that a larger group could play.
addictnounA person who is unable to stop using a substance or engaging in a harmful habit.He became an addict after years of using painkillers prescribed for an old injury.
addressnounThe specific details of a location, such as a street and number, where mail is delivered.Please write your home address clearly on the front of the envelope.
adeptadjectiveVery skilled or proficient at a particular task or activity through practice.She grew adept at repairing bicycles after helping her father for years.
adequateadjectiveSatisfactory or sufficient for a particular purpose or need.The small apartment was adequate for a single person, though a bit cramped.
adhereverbTo stick firmly to a surface, or to follow a rule, belief, or plan closely.The wet paint failed to adhere properly to the cold metal surface.
adhesivenounA substance, such as glue, used to stick two surfaces together.She used a strong adhesive to fix the broken handle on the mug.
adjacentadjectiveNext to or adjoining something else, sharing a common border or edge.The bookstore sits adjacent to a small coffee shop on the corner.
adjoinverbTo be next to and in contact with something, often sharing a common wall, border, or boundary.The garden adjoins a small public park, so neighbors often walk through both spaces.
adjournverbTo suspend a meeting, trial, or session temporarily, intending to continue it later.The judge decided to adjourn the trial until the following Monday morning.
adjustverbTo change something slightly so that it works better or fits a new situation.He adjusted the mirror before pulling out of the driveway.
administerverbTo manage or oversee the running of an organization, or to formally give or apply something, such as medicine.The nurse administered the vaccine carefully before recording the dose in the patient's chart.
admireverbTo regard someone or something with respect, approval, or warm appreciation.Students admired their teacher's patience even during the most stressful exams.
admissionnounPermission to enter a place, institution, or event, or the act of being let in.Admission to the museum is free for students on Wednesdays.
admitverbTo confess that something is true, often reluctantly.He finally admitted that he had forgotten about the meeting.
adoptverbTo legally take another person's child into your family as your own, or to choose to use a method, idea, or practice.The couple decided to adopt a toddler after years of trying to conceive.
adorableadjectiveExtremely charming, lovable, and delightful, especially due to a small or cute appearance.The puppy looked adorable curled up fast asleep in its tiny basket.
adornverbTo make a person or thing more beautiful by adding decorations or ornaments.Fresh flowers adorned every table at the elegant wedding reception that evening.
adriftadjectiveFloating on water without being steered, anchored, or controlled by anyone.The small boat was found adrift several miles from the harbor.
advanceverbTo move forward, make progress, or develop to a further or higher stage.The soldiers slowly advanced toward the abandoned village at dawn.
advantagenounA condition or circumstance that puts someone or something in a favorable or superior position.Speaking three languages gave her a clear advantage in the job interview.
adventnounThe arrival or beginning of a significant event, person, era, or invention.The advent of the internet completely transformed how people communicate.
adventurenounAn exciting or unusual experience, often involving risk, travel, or the unknown.Their backpacking trip through South America turned into the adventure of a lifetime.
adverbnounA word that modifies a verb, adjective, or other adverb, often showing manner, time, or degree.In the sentence 'she sang beautifully', the word 'beautifully' is an adverb.
adverseadjectiveHarmful, unfavorable, or working against someone's interests or well-being.The medication can cause adverse side effects in some patients.
advertiseverbTo promote a product, service, or event publicly in order to attract customers or attention.The bakery advertised its new pastries with colorful posters around town.
advicenounA recommendation or suggestion offered to someone about what they should do.Her grandmother's advice about saving money proved useful for decades.
advocateverbTo publicly support or recommend a particular cause, policy, or course of action.The doctor advocates for better access to mental health care in rural communities.

Why ad- sometimes looks different

In Latin, the prefix ad- often changed its final letter to match the sound that followed it, producing forms like ac-, af-, ap-, and as-. Words such as accord or affirm come from the same root as adapt, even though the spelling shifted. Noticing this pattern helps explain why many English words that look unrelated actually share a common ancestor.

Frequently asked questions

What does the prefix ad- mean?

It generally means 'to' or 'toward,' as seen in advance (move toward) and adhere (stick to).