untimeliness

from WordNet (r) 3.0 (2006)

untimeliness
    n 1: being at an inappropriate time [syn: {unseasonableness},
         {untimeliness}] [ant: {seasonableness}, {timeliness}]
    2: the quality of occurring at an inconvenient time [syn:
       {inopportuneness}, {untimeliness}] [ant: {opportuneness},
       {patness}, {timeliness}]

from The Collaborative International Dictionary of English v.0.48

Untimeliness \Un*time"li*ness\, n.
   Unseasonableness.
   [1913 Webster]