1. Decompose (Latin de- + componere, "to put together") - To break down into smaller parts or elements.


2. Decontaminate (Latin de- + contaminate, "to contaminate") - To remove or reduce contaminants or pollutants from an environment or item.


3. Defame (Latin de- + fama, "a rumor") - To harm someone's reputation by making false or malicious statements.


4. Deflate (Latin de- + flate, "to blow") - To reduce the pressure or size of something by releasing air or gas.


5. Deflect (Latin de- + flectere, "to turn") - To cause to turn aside, especially by applying force; to divert.


6. Degrade (Latin de- + gradus, "a step") - To reduce in quality, value, or degree; to lower in rank or character.


7. Dehydrate (Latin de- + hydros, "water") - To remove water or moisture from something.


8. Demolish (Latin de- + moliri, "to build") - To tear down, destroy, or ruin completely.


9. Demoralize (Latin de- + morale, "morals") - To destroy or weaken the morale or spirits of someone or a group of people.


10. Denounce (Latin de- + nuntiare, "to declare") - To publicly condemn or criticize someone or something.


1. Imbibe (etymology: Latin, "to drink in") - to consume alcohol or any other liquid.


2. Imbroglio (etymology: Italian, "a confusing situation") - a complicated or confused situation.


3. Impassive (etymology: Latin, "without feeling") - without emotion or feeling.


4. Immaculate (etymology: Latin, "without spot") - free from dirt or stain; spotless; perfect.


5. Immaterial (etymology: Latin, "not of matter") - not consisting of physical matter; not relevant or important.


6. Immature (etymology: Latin, "not ripe") - not fully developed; not old or experienced enough.


7. Imminent (etymology: Latin, "about to happen") - about to happen; impending.


8. Immolate (etymology: Latin, "to sacrifice") - to kill or offer as a sacrifice.


9. Immutable (etymology: Latin, "not changeable") - not capable of being changed; unchangeable.


10. Immunize (etymology: Latin, "to make immune") - to make someone or something immune to a particular disease or condition.


1. Unbelievable:


Etymology: Late Middle English (in the sense ‘not worthy of belief’): from Old French incroiable, from in- ‘not’ + croire ‘believe’.


Definition: Too extraordinary or improbable to be believed.


2. Unacceptable:


Etymology: Late 16th century: from un- (expressing reversal) + acceptable.


Definition: Not satisfactory or not approved of.


3. Unconditional:


Etymology: Late Middle English: from un- (expressing reversal) + conditional.


Definition: Not subject to any restrictions; absolute.


4. Unconventional:


Etymology: Early 19th century: from un- (expressing reversal) + conventional.


Definition: Not based on or in agreement with what is generally done or believed.


5. Unforeseen:


Etymology: Mid 17th century: from un- (expressing reversal) + foreseeable.


Definition: Not anticipated; unexpected.


6. Unfortunate:


Etymology: Late Middle English (in the sense ‘unlucky’): from Old French, literally ‘not fortunate’, from un- (expressing reversal) + fortune (noun).


Definition: Unlucky or adverse; causing misery or suffering.