1. (noun) a person who backs a politician or a team etc.

• admirer
• champion
• friend
• protagonist
• supporter

2. (noun) someone who is an active supporter and advocate

• plugger
• promoter

3. (noun) a thief who steals goods that are in a store

• lifter
• shoplifter

4. (noun) an amplifier for restoring the strength of a transmitted signal

• booster amplifier
• booster station
• relay link
• relay station
• relay transmitter

5. (noun) the first stage of a multistage rocket

• booster rocket
• booster unit
• takeoff booster
• takeoff rocket

6. (noun) an additional dose that makes sure the first dose was effective

• booster dose
• booster shot
• recall dose

1. (noun) a person who backs a politician or a team etc.

• advocate
• advocator
• exponent
• proponent

2. (noun) someone who is an active supporter and advocate

• adman
• advertiser
• advertizer

3. (noun) a thief who steals goods that are in a store

• stealer
• thief

4. (noun) an amplifier for restoring the strength of a transmitted signal

• amplifier

5. (noun) the first stage of a multistage rocket

• rocket
• rocket engine

6. (noun) an additional dose that makes sure the first dose was effective

• dosage
• dose

1. (noun) a person who backs a politician or a team etc.

• anglophil
• anglophile
• believer
• truster
• boswell
• cheerleader
• confederate
• corporatist
• endorser
• indorser
• ratifier
• subscriber
• enthusiast
• partisan
• partizan
• francophil
• francophile
• free trader
• functionalist
• graecophile
• philhellene
• philhellenist
• jacobite
• loyalist
• stalwart
• mainstay
• pillar
• maintainer
• sustainer
• upholder
• new dealer
• roundhead
• seconder
• shavian
• sympathiser
• sympathizer
• well-wisher
• toaster
• wassailer
• verifier
• voucher
• whig

2. (noun) someone who is an active supporter and advocate

• barker

1. (noun) a person who backs a politician or a team etc.

• admire
• look up to
• advance
• boost
• encourage
• further
• promote
• back
• endorse
• indorse
• plump for
• plunk for
• support
• champion
• defend
• defend
• fend for
• support

2. (noun) someone who is an active supporter and advocate

• advance
• boost
• encourage
• further
• promote
• advertise
• advertize
• promote
• push
• plug

3. (noun) a thief who steals goods that are in a store

• abstract
• cabbage
• filch
• hook
• lift
• nobble
• pilfer
• pinch
• purloin
• snarf
• sneak
• swipe
• shoplift

4. (noun) the first stage of a multistage rocket

• boost