assure

verb

1. make certain of

   verb.communication

   Synonyms ensure guarantee insure secure

   Source: WordNet 3.0

2. inform positively and with certainty and confidence

   verb.communication

   Synonyms tell

   Source: WordNet 3.0

3. assure somebody of the truth of something with the intention of giving the listener confidence

   verb.communication

   Examples

   I assured him that traveling to Cambodia was safe.

   Source: WordNet 3.0

4. be careful or certain to do something; make certain of something

   verb.cognition

   Synonyms ascertain check control ensure insure see see to it

   Source: WordNet 3.0

5. cause to feel sure; give reassurance to

   verb.emotion

   Examples

   The airline tried to reassure the customers that the planes were safe.

   Synonyms reassure

   Antonyms vex worry

   Source: WordNet 3.0

6. make a promise or commitment

   verb.communication

   Synonyms promise

   Source: WordNet 3.0

7. To make sure or certain; to render confident by a promise, declaration, or other evidence.

   verb

   Source: webster1913