[syn: causeless, reasonless]
The Collaborative International Dictionary of English v.0.48:
Reasonless \Rea"son*less\, a.
1. Destitute of reason; as, a reasonless man or mind. --Shak.
[1913 Webster]
2. Void of reason; not warranted or supported by reason;
unreasonable.
[1913 Webster]
This proffer is absurd and reasonless. --Shak.
[1913 Webster] re-assail
WordNet (r) 3.0 (2006):
reasonless
adj 1: not marked by the use of reason; "mindless violence";
"reasonless hostility"; "a senseless act" [syn:
mindless, reasonless, senseless]
2: not endowed with the capacity to reason; "a reasonless brute"
3: having no justifying cause or reason; "a senseless, causeless
murder"; "a causeless war that never had an aim"; "an
apparently arbitrary and reasonless change" [syn:
causeless, reasonless]