Uncommon

zeitgeist
[tsahyt-gahyst]
the defining spirit or mood of a particular period of history as shown by the ideas and beliefs of the time

petrichor
[pet-ri-kawr, pe-trahy-kawr]
a pleasant smell that frequently accompanies the first rain after a long period of warm, dry weather

convivial
[kuhn-viv-ee-uhl]
friendly; agreeable

penumbra
[pi-nuhm-bruh]
the partial or imperfect shadow outside the complete shadow of an opaque body, as a planet, where the light from the source of illumination is only partly cut off

noisome
[noi-suhm]
of or related to an offensive, unpleasant, or disgusting as an odor

contrived
[kuhn-trahyvd]
obviously planned or forced; artificial; strained

ambrosial
[am-broh-zhuhl]
exceptionally pleasing to taste or smell; especially delicious or fragrant

propinquity
[proh-ping-kwi-tee]
the state of being close to someone or something; proximity

brusque
[bruhsk]
abrupt in manner; blunt; rough

ubuntu
[oo-boon-too]
humanity or fellow feeling; kindness

rife
[rahyf]
of common or frequent occurrence; prevalent; in widespread existence, activity, or use

insufflate
[in-suhf-leyt]
to blow or breathe (something) in

boondoggle
[boon-dog-uhl]
waste money or time on unnecessary or questionable projects

wanton
[won-tn]
a sexually unrestrained woman

ubiquitous
[yoo-bik-wi-tuhs]
existing or being everywhere, especially at the same time; omnipresent

pedagogy
[ped-uh-goh-jee]
the function or work of a teacher; teaching

taradiddle
[tar-uh-did-l]
a small lie; fib

hegira
[hi-jahy-ruh]
any flight or journey to a more desirable or congenial place

obstreperous
[uhb-strep-er-uhs]
noisy and difficult to control

succedaneum
[suhk-si-dey-nee-uhm]
a substitute

feckless
[fek-lis]
lacking initiative or strength of character; irresponsible

prosaic
[proh-zey-ik]
commonplace or dull; matter-of-fact or unimaginative

oeillade
[œ-yad]
an amorous glance; ogle

monotonous
[muh-not-n-uhs]
having very little inflection; limited to a narrow pitch range