adj.
  - equivalent in value to the sum or item specified. ▸having income or property amounting to a specified sum. 
- deserving to be treated or regarded in the way specified.
n.
  - the value or merit of someone or something. ▸an amount of a commodity equivalent to a specified sum of money. 
- the amount that could be achieved or produced in a specified time.
Phrase
  
    - for all one is worth
 informal as energetically or enthusiastically as one can.
- for what it is worth
 used when offering a suggestion or opinion without making a claim as to its validity.
 
  Etymology
  OE w(e)orth (adj. and n.), of Gmc origin.