Definition of truster in US English:

truster

noun

  • See trust

    • ‘When there is trust, the truster is made vulnerable, while the trusted is invested with some degree of discretionary power: he is trusted precisely over those areas for which there is not full, pre-established, contractual agreement.’
    • ‘The truster is at risk of being let down, disillusioned, or betrayed because the truster relies on the trusted.’
    • ‘There are more trusters than doubters, but the gap is perilously close for such a high-risk war plan.’

Pronunciation

truster

/ˈtrəstər//ˈtrəstər/