Pronunciation: ee-go-ist

Meaning (Detailed): A person who consistently prioritizes their own interests, needs, and desires above others.

Etymology (Detailed): From Latin “ego” = I (self) + suffix “-ist” = one who practices/believes  → Egoist = a person driven by “I” (self-interest) 

Similar Words: egocentric, self-centered, narcissistic

Sentence: His egoist nature made collaboration difficult.

Pronunciation: ee-go-tist

Meaning: A person who constantly boasts about themselves.

Etymology: From ego (self) → focuses on expression of self-importance

Egoist = believes in self
Egotist = talks about self

Similar Words: boastful, self-obsessed

Sentence: The egotist kept praising his achievements.

Pronunciation: al-troo-ist

Meaning: A person who helps others without expecting anything in return.

Etymology: From Latin “alter” = other

→ Altruist = one who lives for others (opposite of ego)

Similar Words: humanitarian, benevolent

Sentence: She is an altruist who donates regularly.

Pronunciation: awl-tuh-ray-shun

Meaning: A minor modification or adjustment.

Etymology:  alter = other/change + -ation (process)  → making something “other” than before

Similar Words: modification, adjustment

Sentence: The tailor made slight alterations.

Pronunciation: awl-tuh-kay-shun

Meaning: A heated verbal dispute.

Etymology: Latin altercari = to argue with another person  → conflict between two sides

Similar Words: quarrel, dispute

Sentence: They had an altercation in public.

Pronunciation: awl-tur ee-go

Meaning: A secondary personality or identity.

Etymology: Latin alter (other) + ego (self) → “other self”

Similar Words: double, counterpart

Sentence: The superhero is his alter ego.

Pronunciation: in-troh-vurt

Meaning: A person who prefers solitude and internal thoughts.

Etymology: Latin intro = inside + vertere = turn → turns inward

Similar Words: reserved, shy

Sentence: He is an introvert.

Pronunciation: eks-troh-vurt
Meaning: A person who enjoys social interaction
Etymology: extra = outside
Similar Words: sociable
Sentence: She is an extrovert.

Pronunciation: am-bi-vurt
Meaning: Having both introvert and extrovert traits
Etymology: ambi = both
Similar Words: balanced
Sentence: He is an ambivert.

Pronunciation: am-bi-deks-trus
Meaning: Able to use both hands equally well
Etymology: ambi = both + dexter = right hand
Similar Words: versatile
Sentence: She is ambidextrous.