booster dose

noun 0.877

booster injection

noun 0.860

booster shot

noun 0.855

boosting

noun 0.775

boost

noun 0.761

booster club

noun 0.702

bolstering

noun 0.658

bolster

noun 0.649

boosterism

noun 0.649

booter

noun 0.618

boaster

noun 0.609

power-up

noun 0.590

increaser

noun 0.582

reinforcer

noun 0.580

fortifier

noun 0.568

strengthener

noun 0.564

buff

noun 0.564

enhancer

noun 0.562

immunostimulant

noun 0.551

bonus

noun 0.546

increase

noun 0.543

accelerator

noun 0.542

enhancement

noun 0.542

top-up

noun 0.542

supercharge

noun 0.540

stimulator

noun 0.540

pumper

noun 0.539

adjuvant

noun 0.537

bomber

noun 0.534

supplement

noun 0.533

reinforcement

noun 0.532

ump

noun 0.529

backer

noun 0.528

boot

noun 0.528

pump

noun 0.526

buff coat

noun 0.525

refresher

noun 0.524

upgrader

noun 0.524

boots

noun 0.524

buffe

noun 0.523

boiler

noun 0.523

boomer

noun 0.523

augmenter

noun 0.523

amplifier

noun 0.522

buffing

noun 0.522

augment

noun 0.522

promoter

noun 0.521

bootstrap

noun 0.520

exciter

noun 0.520

shot in the arm

noun 0.520

upgrade

noun 0.518

injector

noun 0.515

stimulant

noun 0.515

rejuvenator

noun 0.513

injection

noun 0.513

boon

noun 0.512

bouncer

noun 0.511

intensifier

noun 0.509

propellant

noun 0.509

activator

noun 0.509

rocket

noun 0.508

energizer

noun 0.508

advancer

noun 0.508

booting

noun 0.507

buster

noun 0.507

augmentative

noun 0.507

expander

noun 0.506

boo

noun 0.504

boom

noun 0.503

kickboard

noun 0.503

supplemental

noun 0.502

vaccination

noun 0.500