• iutsmarting,
• kutsmarting,
• lutsmarting,
• putsmarting,
• 0utsmarting,
• 9utsmarting,
• oytsmarting,
• ohtsmarting,
• ojtsmarting,
• oitsmarting,
• o8tsmarting,
• o7tsmarting,
• outamarting,
• outsmaeting,
• outsmartting,
• otsmarting,
• outsmating,
• outsmatings,
• outsmarthly,
• outsmarteings

• outsmart.

The adjective form of the word "outsmarting" is "outsmarting" itself. Adjectives are typically formed by adding a suffix such as "-ing" to a verb, which is the case here.

The plural form of the word "outsmarting" is "outsmartings"

The singular form of "outsmarting" is "outsmarting" itself, as it is already in its base or infinitive form.