Vocabulary and Synonyms

[volatile, lively]

This is the correct option. ‘Worthless’ is someone or something that is of no use; is without any value. This is relevant as it is used to refer to individuals.

'Overt' means open to view, public, not hidden or secret. 'Obvious' means easily understood or evident, which is similar but not identical to overt. Looking more closely, none of the options are truly good synonyms. 'Odiferous' means smelly, 'odious' means hateful, 'ovation' is applause, 'overpower' means to overcome. Only 'obvious' is somewhat close in meaning.

'Ovation' means enthusiastic applause, especially as public recognition or approval. 'Applause' is the direct expression of approval through clapping, which is the core meaning of ovation. 'Overturn', 'override', and 'outdo' are unrelated words that don't match the meaning.

Somber means gloomy, dark, or solemn in manner or appearance. Gloomy directly captures this meaning of sadness and seriousness, while the other options (resonant, dirty, calm, pacify) do not relate to the definition of somber.

Refined means developed, improved, or elegant in culture or taste. Sophisticated is a direct synonym, while sojourn (stay), sovereign (ruler), and somber (gloomy) are unrelated.

Solace means comfort, consolation, or relief in distress. Console means to provide comfort or solace, making it the correct synonym. Conceal, convert, and convoy are unrelated.

Swear means to make a solemn promise, oath, or vow. Promise is a direct synonym in this context. Prove, proud, and price are unrelated to the meaning of swear.

Quiver means to tremble or shake slightly, typically from cold, fear, or excitement. Shiver is a direct synonym as it also refers to trembling from cold or fear.

Surmise means to suppose or infer something with limited evidence. Guess is the closest synonym among the options, referring to forming a conclusion without certainty.

Jeopardize means to put something in danger or risk of harm. Endanger is a perfect synonym, meaning to expose to harm or risk.

Niggard means a stingy person who is reluctant to spend money. Miser is the direct synonym referring to someone who hoards wealth and spends sparingly.

Aphorism is a concise statement of a general truth or principle. Proverb is the closest synonym, referring to a short, traditional saying expressing wisdom.

Blithe means cheerful, carefree, and lighthearted. Glad is the closest synonym among the options, meaning happy or pleased.