a. 1. Done at an improper time; unseasonable; untimely. [ R. ] [ 1913 Webster ]

Nor fits it to prolong the heavenly feast
Timeless, indecent. Pope. [ 1913 Webster ]

2. Done or occurring before the proper time; premature; immature; as, a timeless grave. [ Obs. ] [ 1913 Webster ]

Must I behold thy timeless, cruel death? Shak. [ 1913 Webster ]

3. Having no end; interminable; unending. “Timeless night and chaos.” Young. [ 1913 Webster ]

adv. In a timeless manner; unseasonably. [ R. ] Milton. [ 1913 Webster ]