The phrase "adequate belief" is correct and usable in written English.
It can be used in contexts where you want to express that a belief is sufficient or satisfactory for a particular purpose or situation.
Example: "In order to proceed with the project, we need to establish an adequate belief in the feasibility of our plan."
Alternatives: "sufficient belief" or "reasonable belief".
During the first step of the multidisciplinary care program, all patients get access to the e-health intervention, which primarily aims to empower patients' behavioural determinants and supports adequate beliefs regarding recovery and RTW in patients with an uncomplicated postoperative course [ 18].
This suggests that an adequate model of belief under severe uncertainty may need to move beyond the single probability paradigm.
Others equate knowledge solely with understanding, whether or not it is accompanied by adequate justifications or belief and/or acceptance (Carter and Wiles 2014; Deniz et al. 2008).
At baseline, consumers demonstrated scores suggesting positive back pain beliefs, adequate health literacy and positive health behaviours, the latter reflected by the use of more active than passive strategies in self-managing their persistent LBP.
Another study in Spain on appropriate use of antibiotics in primary health care points out that an adequate level of beliefs in parents about the indications of antibiotic use in several illnesses are associated with a high level of parental education (Odds Ratio, 2.04; 95% CI, 1.16 -3,06).
Perhaps Socrates did show, through his intense questioning, that the craftsmen, poets, and politicians formed and held their beliefs without adequate evidence or formed and held them through unreliable belief forming processes.
Those who voted to uphold the death penalty in 1976, he said, "relied heavily on our belief that adequate procedures were in place" to treat death penalty cases with special care so as to minimize bias and error.
A strong conclusion of the paper is therefore that, against common belief, an adequate use of the patent system may contribute to preserving freedom of access to upstream research tools within a framework that we call free-libre biotechnology.
If atheism is justified, the atheist will have shown that in fact there is no adequate evidence for the belief that God exists, but it should not be part of his task to try to show that there could not be any evidence for the existence of God.
The first thing to say is that $P X)$ is not an adequate representation of the belief in $X$.
