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 unsure unsure /ənˈʃʊr/

adjective

  1. Lacking or indicating lack of confidence or assurance  ( unsure , incertain [Non-standard] , uncertain )
    lacking or indicating lack of confidence or assurance
     Uncertain of his convictions
    uncertain of his convictions
     Unsure of himself and his future
    unsure of himself and his future
     Moving with uncertain (or unsure) steps
    moving with uncertain (or unsure) steps
     An uncertain smile
    an uncertain smile
     Touched the ornaments with uncertain fingers
    touched the ornaments with uncertain fingers
  2. Lacking self-confidence  ( diffident , shy , timid , unsure , unconfident )
    lacking self-confidence
     Stood in the doorway diffident and abashed
    stood in the doorway diffident and abashed
     Problems that call for bold not timid responses
    problems that call for bold not timid responses
     A very unsure young man
    a very unsure young man


 expansion expansion /ɪkˈspæntʃən/

noun

  1. () The act of increasing (something) in size, volume, quantity or scope  ( enlargement , expansion )
    the act of increasing (something) in size, volume, quantity or scope
      The company planned an expansion into international markets.
    The company planned an expansion into international markets.
  2. Adding information or detail  ( expanding upon , expansion )
    adding information or detail
  3. A discussion that provides additional information  ( elaboration , enlargement , expansion )
    a discussion that provides additional information
  4. (mathematics) a function expressed as a sum or product of terms  ( expansion )
    (mathematics) a function expressed as a sum or product of terms
     The expansion of (a+b)^2 is a^2 + 2ab + b^2
    the expansion of (a+b)^2 is a^2 + 2ab + b^2


 car bomb car bomb /kɑːr bɒm/

noun

  1. A bomb placed in a car and wired to explode when the ignition is started or by remote control or by a timing device  ( car bomb )
    a bomb placed in a car and wired to explode when the ignition is started or by remote control or by a timing device
     The security agency was on high alert after reports of a possible car bomb.
    The security agency was on high alert after reports of a possible car bomb.


 kept woman kept woman /kɛpt ˈwʊmən/

noun

  1. [Informal] An adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man  ( fancy woman [Vulgar] , kept woman [Informal] , bit on the side [Informal, British] , mistress )
    an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man
      The wealthy businessman had a secret mistress with whom he shared his life.
    The wealthy businessman had a secret mistress with whom he shared his life.