Definitions
1.adjective(political, of an MP) Having been deprived of party membership as a disciplinary measure, or having relinquished membership, and often not voting to support party policy."... spectacle of Conservative Euro-rebels delighting in their disgrace and flaunting their whipless condition, rather than being sad and ashamed of what has happened. (Hansard, 24 Feb 1995)."
2.adjective(informal, of coffee) Without whipped cream.
3.adjectiveWithout a whip (as in horse racing).
4.adjective(of an antenna) Concealed, with no visible aerial.
5.adjectiveDesigned so as to avoid a lash rebound like a whip.