spark

noun 0.684

vitality

noun 0.634

sparker

noun 0.623

sparks

noun 0.621

vital effect

noun 0.620

sparky

noun 0.612

sparking plug

noun 0.605

spark plug

noun 0.598

spark gap

noun 0.597

igniter

noun 0.567

vital organ

noun 0.565

vivacity

noun 0.551

sparkle

noun 0.548

ignition

noun 0.548

lifeblood

noun 0.546

spar

noun 0.544

vitalist

noun 0.540

liveliness

noun 0.539

sparkling

noun 0.538

moving spirit

noun 0.536

vibrancy

noun 0.536

spiracle

noun 0.529

vitalism

noun 0.526

sparkler

noun 0.522

bright spot

noun 0.521

spirit

noun 0.515

vim and vigor

noun 0.513

sprightliness

noun 0.512

kindling

noun 0.511

heart and soul

noun 0.510

kick start

noun 0.510

vivaciousness

noun 0.509

lively

noun 0.507

hot spot

noun 0.506

mainspring

noun 0.505

vivification

noun 0.504

vigour

noun 0.503

master spirit

noun 0.502