1. A question or inquiry.

2. Containing or expressing a question.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• interrigators,
• interogator,
• interrigator,
• interregator,
• interogators,
• interrogater,
• interrogaters,
• interragator,
• interpolatory,
• interrogatorr,
• unterrogatory,
• jnterrogatory,
• intrrrogatory,
• interrigatory,
• interogatory,
• intrerogatory,
• inturrogatory,
• interragatory,
• interogotory,
• interrogotorij

• internationally,
• intermediator,
• interceptor,
• interrupted,
• intermarry,
• interrogator,
• interracial,
• interoceptor,
• interrogative,
• interstate,
• interrogate,
• interpolate,
• interfering,
• internationality,
• intercalate,
• interrelation,
• interrupter,
• interracially,
• interrelate,
• interstratify,
• interpolation,
• interrogation,
• interlocutory,
• internationale,
• interlocutor,
• international,
• intercalation,
• interpersonal,
• interrogatively,
• interruption.

The adjective form of the word "interrogatory" is "interrogative".

The plural of the "interrogatory" can be the "interrogatories".

The singular of the "interrogatory" can be the "interrogatory".