Search Result for "unofficial": 
Wordnet 3.0

ADJECTIVE (2)

1. not having official authority or sanction;
- Example: "a sort of unofficial mayor"
- Example: "an unofficial estimate"
- Example: "he participated in an unofficial capacity"

2. not officially established;
- Example: "the early election returns are unofficial"


The Collaborative International Dictionary of English v.0.48:

Unofficial \Unofficial\ See official.
WordNet (r) 3.0 (2006):

unofficial adj 1: not having official authority or sanction; "a sort of unofficial mayor"; "an unofficial estimate"; "he participated in an unofficial capacity" [ant: official] 2: not officially established; "the early election returns are unofficial"