ad arbitriumadv.
/ˌad ɑːˈbɪtrɪəm/, U.S. /ˌæd ɑrˈbɪtriəm/ At or according to one's will or pleasure; as one pleases; arbitrarily.
ΘΚΠ
the mind > will > wish or inclination > [adverb]
to one's willOE
by one's willOE
self-willesOE
after a person's willOE
a-willc1275
at willc1300
at one's (own) liberty1426
ad placituma1556
at pleasure1579
ad libitum1606
arbitrarilya1626
arbitrariously1653
discretionally1655
ad arbitrium1663
voluntarily1676
discretionarily1681
antecedently1682
discretionary?1707
ad lib1791
at one's own sweet will1802
at choice1817
at no allowance1858
1647 J. Taylor Disc. Liberty of Prophesying xiii. 195 If criminalls were to be let alone till the day of Judgement, bodies politique must stand or fall ad arbitrium impiorum, and nothing good could be protected.]
1663 in Eng. Rep. (1912) 124 600 It is but just that the mayor, &c...have the power..to appoint who shall be their officers... And that it being left ad arbitrium, whom they will admit to be factors, they may refuse any persons without reasonable cause.
1799 S. T. Coleridge Own Times I. 188 A legislature..whose acts are annullable ad arbitrium.
1826 Morning Post 28 Dec. By..changing the meaning of language, ad arbitrium, Dr. Doyle may at once..get rid of every charge brought against the obnoxious tenets of his Church.
1905 McGill Univ. Mag. Dec. 77 Any further assertion as to the equivalence of two such groups does claim to add something to our knowledge, and for that very reason must not be assumed ad arbitrium, but requires to be duly proved.
1963 New Yorker 8 June 46 You can roam around the stacks ad arbitrium.
2010 I. Furseth in P. Zuckerman Atheism & Secularity vii. 215 Any official or unofficial institutions and groups cannot persecute religious adherents ad arbitrium.
This is a new entry (OED Third Edition, December 2011; most recently modified version published online December 2021).
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adv.1663