Meanings and synonyms : Oblivious, Sojourn, Nonchalantly, Taboo, Unwittingly, Solemn, Chore, Premonition

Oblivious: not aware of or concerned about what is happening around one.
/əˈblɪvɪəs/
Ex: Jane became absorbed, oblivious to the passage of time
synonyms:    unaware, unconscious, insensible,  unconcerned, insensitive, indifferent, detached...
Oblivion : the state of being completely forgotten or unknown / the state of forgetting or of being oblivious
/uh-bliv-ee-uh n/
Ex: A former movie star now in oblivion.


Sojourn: a temporary stay /
/ˈsɒdʒ(ə)n,ˈsɒdʒəːn/
Ex: My 20 Year Sojourn With Smoking finally ends..
Her sojourn in Kerala.
He had sojourned once in Japan.
synonyms:stay, live

Nonchalantly: in a casually calm and relaxed manner.
/ˈnɒnʃ(ə)l(ə)ntli/
Ex: He nonchalantly  walked out of the hospital.
synonyms: coolly unconcerned, indifferent ,unexcited, smoothly

Taboo:  A practice that is prohibited or restricted by social or religious custom / A social or religious custom prohibiting or restricting a particular practice or forbidding association with a particular person, place, or thing / prohibited or restricted by social custom.
/təˈbuː/
synonyms:    prohibition, proscription, ban, restriction, boycott, non-acceptance
Ex: The burial ground was seen as a taboo place.
Speaking about sex is a taboo in his country.

Chore:  the everyday work around a house or farm. / a routine household task / a tedious but necessary task.
/tʃɔː/
synonyms:    task, job, duty
Ex:   Solving the problem was quite a chore.
Sometimes it feels like interviews as a chore.

Unwittingly: without being aware
/ʌnˈwɪtɪŋli/
synonyms of unwittingly :: unaware , unintentionally, unexpected,  ignorant,without fully realizing, uninformed,  accidental
Ex: I unwittingly allowed myself to become a slave to the habit of smoking.

Solemn: formal and dignified / characterized by deep sincerity.
/ˈsɒləm/
Ex:
A solemn procession.
He took a Solemn oath to quit smoking.
synonyms of solemn:  splendid, magnificent, grand, sincere, earnest, honest, genuine,     dignified

Premonition: a strong feeling that something (unpleasant / bad) is about to happen.
/ˌprɛməˈnɪʃ(ə)n,ˌpriːməˈnɪʃ(ə)n/
Ex: She had a premonition of some sort of disaster.
synonyms of Premonition: advance warning

Dissident : a person who opposes official policy, especially that of an authoritarian state.  
/ˈdɪsɪd(ə)nt/ 
Ex: Government treated him as a dissident and jailed him.
synonyms:    objector, protester, disputant