1. Quixotic (adjective): extremely idealistic; unrealistic and impractical. Etymology: derived from Don Quixote, the main character of the Spanish novel by Miguel de Cervantes.

2. Meander (verb): to move aimlessly without a particular direction or purpose. Etymology: derived from the Meander river in Asia Minor which had a winding, looping course.

3. Brouhaha (noun): a loud and confused noise, especially of people talking or shouting. Etymology: derived from the French phrase bru-haha meaning “uproar.”

4. Serendipity (noun): the occurrence of something fortunate or unexpected. Etymology: derived from the Persian fairy tale, The Three Princes of Serendip, in which the three princes always make unexpected discoveries.

5. Ubiquitous (adjective): present or appearing everywhere. Etymology: derived from the Latin word ubique which means “everywhere.”

6. Macabre (adjective): gruesome or horrifying in nature. Etymology: derived from the medieval French phrase makaber meaning “death dance.”

7. Quandary (noun): a state of perplexity or uncertainty. Etymology: derived from the Latin word quando which means “when”.

8. Zenith (noun): the point in the sky that is directly above an observer. Etymology: derived from the Arabic phrase samt ar-raḥ which means “path of the noon sun.”

9. Quirk (noun): an unusual or odd behavior. Etymology: derived from the Middle English word querk which means “crooked.”

10. Maverick (noun): a person who takes an independent or unconventional stance. Etymology: derived from the name of a 19th-century cattle rancher, Samuel Maverick, who refused to brand his cattle.

2. Fandango (Noun): a lively Spanish or Latin-American dance for two people. Etymology: Spanish, from fandango ‘a free dance’.

3. Quagmire (Noun): a difficult or precarious situation; a bog or marsh. Etymology: Late 16th century: probably from Old English quaker ‘trembling’, + mire ‘marsh’.

4. Flabbergasted (Adjective): utterly astonished or bewildered. Etymology: Late 19th century: alteration of obsolete flag ‘astound’ + obsolete baste ‘beat’.

5. Quandary (Noun): a state of perplexity or doubt. Etymology: Late 16th century: from Latin quandārium ‘at which time’, from quandō ‘when’.

6. Bamboozle (Verb): deceive or get the better of (someone) by trickery or cunning. Etymology: Early 18th century: probably of imitative origin.

7. Cockamamie (Adjective): absurd; ridiculous. Etymology: Mid 20th century: of unknown origin.

8. Sillybilly (Noun): a foolish or silly person. Etymology: Early 20th century: of unknown origin.

9. Wabbit (Noun): an exhausted or worn-out person. Etymology: Early 20th century: alteration of rabbit, perhaps influenced by wabble ‘stagger’.

10. Balderdash (Noun): senseless, foolish, or exaggerated talk. Etymology: Mid 17th century: perhaps from bawd ‘trivial nonsense’ + dash.