Informal when: an emphatic form expressing bewilderment, impatience, etc.: whenever will he learn?
- at whatever time: leave whenever you're ready
- on whatever occasion: visit us whenever you can
Also Old Poet.when·e'er′
- At whatever time.
- When. See Usage Note at whatever.
- At whatever time that: We can leave whenever you're ready.
- Every time that: The child smiles whenever the puppy appears.