[1955–60; kelp + -er1]This word is first recorded in the period 1955–60. Other words that entered Englishat around the same time include: backgrounder, geodesic dome, new wave, rite of passage, software-er is a suffix used in forming nouns designating persons from the object of their occupationor labor (hatter; tiler; tinner; moonshiner), or from their place of origin or abode (Icelander; southerner; villager), or designating either persons or things from some special characteristic or circumstance(six-footer; three-master; teetotaler; fiver; tenner)