Definition: Unable to speak distinctly or express oneself clearly 

Synonyms: Tongue tied, mumbled, muffled, incomprehensible

Sentence: After she got in a car accident, she was inarticulate and found it was hard to speak correctly.

Definition:  The ability to understand something immediately, without the need for conscious reasoning

Synonyms: Instinct, intuitiveness

Sentence: My intuition led me to think something was very wrong, and something bad would soon happen.

Definition: Feeling or showing anger or annoyance at what is perceived as unfair treatment
Synonyms: Annoyed, resentful,  displeased, cross
Sentence: My brother got falsely called to the principal for cheating, so he became indignant and almost punched his teacher.

Definition: In a cautious and surreptitious manner, so as not to be seen or heard

Synonyms: Secretiveness, secrecy, sneakiness, slyness

Sentence: They stealthily tip-toed down stairs to sneak out of the house.

Definition: Producing or consisting of convulsions

Synonyms: Jerky, violent, uncontrollable

Sentence: She cried in between convulsive giggles, unsure why she was laughing about something so sad.

Definition: Not producing any or the desired effect

Synonyms: Ineffective, fruitless, futile, pointless

Sentence: The campaign was ineffectual, since the votes were low. 

Definition: A place or state of suffering inhabited by the souls of sinners who are expiating their sins before going to heaven

Synonyms: Torment, torture, misery, suffering

Sentence: This was purgatory, worse than anything she'd faced in her life. 

Definition: A place or scene of riotous uproar or utter chaos; tumult; unrestrained disorder

Synonyms: Chaos, mayhem, uproar, turmoil

Sentence: Pandemonium broke out in the room. 

Definition: Fearful apprehension; a feeling that something bad will happen

Synonyms: Apprehension, anxiety, unease, suspicion

Sentence: With a sense of foreboding, she read the note.

Definition: A large quantity of people or things that is difficult to cope with or a fierce or destructive attack

Synonyms: Assault, attack, offensive, charge

Sentence: The battalion's onslaught was relentless.