ought to

== English == === Verb === ought to (auxiliary) Indicating duty or obligation. (auxiliary) Indicating advisability or prudence. (auxiliary) Indicating desirability. (auxiliary) Indicating likelihood or probability. ==== Usage notes ==== See ought for fuller examples and usage. Many sources consider that ought to is the basic modal verb form. However, many examples of the use of ought without to as a basic modal auxiliary verb are to be found in common use. ==== Translations ==== ==== See also ==== aught ought Appendix:English modal verbs Appendix:English tag questions