If you say that something such as a warning or danger goes unheeded, you mean that it has not been taken seriously or dealt with. The advice of experts went unheeded a damning picture of lax banking standards and unheeded warnings. noticed but not listened to, accepted, or believed
disregarded; "his cries were unheeded"; "Shaw's neglected one-act comedy, `A Village Wooing'"; "her ignored advice"