ought

• POS: Noun, Verb (usu participle), Adverb
• COUNT in NET: 22 in 22 verses (in OT : 3 in 3 verses) (in NT : 19 in 19 verses)

CIDE DICTIONARY

ought, n. & adv. 

 See Aught.  [1913 Webster]

ought, imp., p. p., or auxiliary [Orig. the preterit of the verb to owe. OE. oughte, aughte, ahte, AS. āhte. Owe.].

•  Was or were under obligation to pay; owed.  [1913 Webster]

  "This due obedience which they ought to the king."  [1913 Webster]

  "The love and duty I long have ought you."  [1913 Webster]

  "[He] said . . . you ought him a thousand pound."  [1913 Webster]
•  Owned; possessed.  [1913 Webster]

  "The knight the which that castle ought."  [1913 Webster]
•  To be bound in duty or by moral obligation.  [1913 Webster]

  "We then that are strong ought to bear the infirmities of the weak."  [1913 Webster]
•  To be necessary, fit, becoming, or expedient; to behoove; -- in this sense formerly sometimes used impersonally or without a subject expressed.  Chaucer.  [1913 Webster]

  " Ought is now chiefly employed as an auxiliary verb, expressing fitness, expediency, propriety, moral obligation, or the like, in the action or state indicated by the principal verb."  [1913 Webster]

  "To speak of this as it ought, would ask a volume."  [1913 Webster]

  "Ought not Christ to have suffered these things?"  [1913 Webster]

Syn. -- Ought, Should.

OXFORD DICTIONARY

ought, v.aux. (usu. foll. by to + infin.; present and past indicated by the following infin.) 1 expressing duty or rightness (we ought to love our neighbours).
2 expressing shortcoming (it ought to have been done long ago).
3 expressing advisability or prudence (you ought to go for your own good).
4 expressing esp. strong probability (he ought to be there by now).

Idiom

ought not the negative form of ought (he ought not to have stolen it).

ought, n. (also aught) colloq. a figure denoting nothing; nought.

ought, var. of AUGHT(1).