(ת') מהימן, אמין; לא פוסק; שאינו טועה

adj. not failing, reliable; endless; infallible, not making mistakes

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Adjective
1. not liable to failure; "a foolproof identification system"; "the unfailing sign of an amateur"; "an unfailing test"
(synonym) foolproof
(similar) infallible
2. always able to supply more; "an unfailing source of good stories"; "a subject of unfailing interest"
(similar) inexhaustible
3. unceasing; "unfailing loyalty"; "unfailing good spirits"; "unflagging courtesy"
(synonym) unflagging
(similar) constant

příd.jm. nezlomný; trvalý

Przym. niewyczerpany; niezawodny

(a.)
Not failing; not liable to fail; inexhaustible; certain; sure.