1. The act of installing; part of a large sum payable at different periods.

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

• instrament,
• installent,
• istallment,
• instument,
• instement,
• instriment,
• instment,
• insturment,
• instalement,
• instatment,
• instament,
• instalments,
• insterment,
• instrement,
• instraument,
• intallment,
• installemnt,
• intalment,
• instuument,
• instllment

• instantiate,
• instability,
• instauration,
• instant,
• installing,
• inositol,
• incitement,
• installation,
• instance,
• instantiation,
• instrumental,
• instilment,
• instrumentate,
• instantly,
• instrument,
• institute,
• installment,
• install,
• instillment.

The adjective form of the word "instalment" is "installmentary".

The plural of the "instalment" can be the "instalments".

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