"Trustful" is a word in ENGLISH

trustful ENGLISH
Definition:

Worthy of trust; faithful; trusty; trustworthy.

trustful ENGLISH
Definition:

Full of trust; trusting.

Few words of positivity

Hell yeah! Twitter was proof that leaderless self-organizing systems could be true agents of change.

Biz Stone, Things a Little Bird Told Me: Confessions of the Creative Mind

WORD SUGGESTIONS
Laugh your heart out.

Mum: From now on your going to have free school dinners.Son:But, Mum, I don't want three school dinners, one is more than enough !

seaworthy ENGLISH

Fit for a voyage; worthy of being trusted to transport a cargo with safety; as, a seaworthy ship.

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solid ENGLISH

Fig.: Worthy of credit, trust, or esteem; substantial, as opposed to frivolous or fallacious; weighty; firm; strong; valid; just; genuine.

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trustless ENGLISH

That may not be trusted; not worthy of trust; unfaithful.

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trustworthy ENGLISH

Worthy of trust or confidence; trusty.

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