Definition of assertiveness in English:
 assertiveness
nounəˈsəːtɪvnəsəˈsərdɪvnəs
mass nounConfident and forceful behaviour.
 she has difficulty standing up for herself, even when assertiveness may be warranted
 Example sentencesExamples
-  The skill of assertiveness is very useful here—this implies the ability to say no.
 -  The study found little difference between the groups of children in assertiveness, which was measured by social development tests.
 -  He conveys John's hesitancy as a lack of assertiveness, rather than a character flaw.
 -  He said innovation was a concept whose success in industry largely depended on the assertiveness of practitioners.
 -  The newly emerging feminine assertiveness has changed the picture to a large extent.
 -  The increased assertiveness of the peasantry made the regime uneasy, fueling anxiety about the threat of rebellion.
 -  Her new levels of assertiveness have her feeling more confident about her career journey.
 -  The forms and imagery of these sculptures refer to assertiveness and aggression.
 -  Many psychologists and researchers have argued that a lack of assertiveness can act as a source of stress.
 -  Cleverness and assertiveness are valued as ways to achieve upward mobility.
 
  Definition of assertiveness in US English:
 assertiveness
nounəˈsərdɪvnəsəˈsərdivnəs
Confident and forceful behavior.
 she has difficulty standing up for herself, even when assertiveness may be warranted
 Example sentencesExamples
-  Her new levels of assertiveness have her feeling more confident about her career journey.
 -  The study found little difference between the groups of children in assertiveness, which was measured by social development tests.
 -  Cleverness and assertiveness are valued as ways to achieve upward mobility.
 -  The skill of assertiveness is very useful here—this implies the ability to say no.
 -  Many psychologists and researchers have argued that a lack of assertiveness can act as a source of stress.
 -  He said innovation was a concept whose success in industry largely depended on the assertiveness of practitioners.
 -  The increased assertiveness of the peasantry made the regime uneasy, fueling anxiety about the threat of rebellion.
 -  The newly emerging feminine assertiveness has changed the picture to a large extent.
 -  The forms and imagery of these sculptures refer to assertiveness and aggression.
 -  He conveys John's hesitancy as a lack of assertiveness, rather than a character flaw.