Wordnet 3.0
ADVERB (1)
1. 
 at an inconvenient time; 
- Example: "he arrived inopportunely just as we sat down for dinner"- Example: "she answered malapropos"[syn: inopportunely, malapropos]
The Collaborative International Dictionary of English v.0.48:
Inopportunely \In*op`por*tune"ly\, adv.
   Not opportunely; unseasonably; inconveniently.
   [1913 Webster]
WordNet (r) 3.0 (2006):
inopportunely
    adv 1: at an inconvenient time; "he arrived inopportunely just
           as we sat down for dinner"; "she answered malapropos"
           [syn: inopportunely, malapropos] [ant: opportunely]