• hlleo,
• hikley,
• halll,
• helll,
• hallal,
• hiller,
• hiatel,
• himmel,
• hilll,
• hiltler,
• hanlel,
• hilld,
• hilpe,
• himler,
• holtel,
• hilself,
• liller,
• whilel,
• hillery,
• hitle

• hull,
• Hulled,
• hall,
• heel,
• Huller,
• he'll,
• Hell,
• holler,
• hill,
• hole.

The adjective form of "Hillel" would be "Hillelian".

The plural form of the word "Hillel" is still "Hillel" when referring to multiple individuals with that name.

The singular form of the word "Hillel" is still "Hillel". It is a proper noun and does not change when referring to a single person or entity.