1. (verb) make certain of

• ensure
• guarantee
• insure
• secure

2. (verb) inform positively and with certainty and confidence

• tell

3. (verb) be careful or certain to do something; make certain of something

• ascertain
• check
• control
• ensure
• insure
• see
• see to it

4. (verb) cause to feel sure; give reassurance to

• reassure

5. (verb) make a promise or commitment

• promise

1. (verb) inform positively and with certainty and confidence

• affirm
• assert
• aver
• avow
• swan
• swear
• verify

2. (verb) assure somebody of the truth of something with the intention of giving the listener confidence

• persuade

3. (verb) be careful or certain to do something; make certain of something

• verify

4. (verb) cause to feel sure; give reassurance to

• calm
• calm down
• lull
• quiet
• quieten
• still
• tranquilize
• tranquillise
• tranquillize

5. (verb) make a promise or commitment

• declare

1. (verb) make certain of

• doom
• make

2. (verb) assure somebody of the truth of something with the intention of giving the listener confidence

• reassure

3. (verb) be careful or certain to do something; make certain of something

• card
• cinch
• control
• cover
• cross-check
• double-check
• proof
• proofread
• spot-check

4. (verb) make a promise or commitment

• contract
• undertake
• guarantee
• undertake
• pledge
• plight
• swear off

1. (verb) make certain of

• guarantee

2. (verb) assure somebody of the truth of something with the intention of giving the listener confidence

• assurance

3. (verb) be careful or certain to do something; make certain of something

• check
• check-out procedure
• checkout
• check
• confirmation
• substantiation
• verification

4. (verb) cause to feel sure; give reassurance to

• reassurance

5. (verb) make a promise or commitment

• assurance
• pledge
• promise
• promisee
• promiser
• promiser
• promisor
• promisor
• promissory

1. (verb) cause to feel sure; give reassurance to

• vex
• worry