well founded
adjective
• (especially of a suspicion or belief) based on good evidence or reasons.
• "their apprehensions were well founded"
Similar:
justifiable,
justified,
warranted,
legitimate,
defensible,
supportable,
sustainable,
tenable,
well grounded,
valid,
admissible,
allowable,
understandable,
excusable,
warrantable,
acceptable,
reasonable,
logical,
sensible,
sound,
just,
bona fide,
genuine,
plausible,
credible,
believable,
