Plummeting
Dropping, Plunging, Going down (Adjective).
Exuberance
Cheerfulness, Liveliness, Ebullience (Noun).
Annihilate
Destroy, Abolish, Exterminate (Verb).
Gaunt
Haggard, Skeletal, Emaciated (Adjective).
Disastrous
Tragic, Devastating, Catastrophic (Adjective).
Claustrophobic
One who feels uncomfortable in enclosed rooms (Adjective).
Martingale
A term for Probability Theory for a particular variable sequence (Noun).
Therapeutic
Healing, Curative, Medicinal, Remedial (Adjective).
Malfunction
Crash, Fail, Break down (Verb).
Discordant
Disagreeing, Conflicting (Adjective).
Suburbia
Outskirts of a city (Noun).
Proselytize
Convert, Evangelize (Verb).
Teetotaler
One who never drinks alcohol, an Abstainer (Noun).
Intercede
Intervene, Step in (Verb).
Oblivious
Unaware, Unmindful, Heedless (Adjective).
Retrospect
Looking back, Hindsight, Reminiscence (Noun).
Amicable
Friendly, Cordial (Adjective).
Indelible
Ineffaceable, Undoable, Indestructible (Adjective).
Squalid
Dirty, Filthy, Grimy, Mucky (Adjective).
Vulnerable
Unsafe, Endangered, At-risk (Adjective).
Doppelganger
Double, Counterpart, Alter ego (Noun).
Probation
Trial period, Apprenticeship, Traineeship (Noun).
Enormous
Huge, Gigantic, Colossal (Adjective).
