• thingymajig,
• thigamajig,
• thingamajig,
• thinhmajig,
• thinymajig,
• thingkajig,
• thingjajig,
• thingajig,
• thinmgajig,
• thinemajig,
• thing-ajig,
• thingeajig,
• thingoajig,
• thingmabig,
• thignumajig,
• thingomajig,
• thinegmajig,
• thingomajog,
• thingyjig,
• thingmagig

• thingamajig,
• thinking,
• thingummy,
• thingumajig,
• thingmabob.

The adjective form of "thingmajig" is "thingmajiggy".

The plural form of "thingmajig" is "thingmajigs".

The singular form of "thingmajig" is "thingmajig". It is a noun of indefinite shape or form, often used to refer to an object when the name is unknown or forgotten.