[image]   vigilance

                                              (noun)

alert attention

The tiger studied his prey with vigilance.

Vague (adj.)

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unclear

A vague figure appeared in the distant fog.

wince (v)    [image]

to shrink or flinch involuntarily

Tiger Woods winced when his ball hit the water.

luminous (adj)

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bright, brilliant

The moon in the night sky was luminous.

calibrated (v, adj)

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marked with measurments

The scale was calibrated for ease of use.

hindrance (n)

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obstacle

Cell phones have become a real hindrance in the classroom.

a similiarity between two sides; balance

The pattern depicted perfect symmetry.

fear; confused amazement

He reacted to the news with horror and consternation.

cower (v)

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cringe; draw back in fear

The dog cowered in the corner after he pooped on the floor.

matching timing

Synchronizing their movements with perfection required countless hours of practice.