Sentence Completion

To accost (v.) means to approach and speak to someone, usually in a bold and aggressive manner as with a demand.

Hindrance (n.) is an impediment or obstruction; a state of being hindered; a cause of being prevented or impeded.

Obstinate (adj.) means stubborn.

A quandary (n.) is a difficult situation.

Palpable (adj.) means tangible, noticeable; easily perceived and detected.

Frenetic (adj.) means wildly excited or agitated, frenzied, frantic.

To scintillate (v.) means to emit or send forth sparks or little flashes of light, creating a shimmering effect; to sparkle.

To revel (v.) is to take great pleasure or delight.

Tentative (adj.) means provisional or uncertain; not fixed or set.