• hellow,
• hollo,
• hillo,
• hully,
• hula,
• hello,
• holloa,
• nullo,
• jullo,
• uullo,
• yullo,
• hyllo,
• hhllo,
• hjllo,
• h8llo,
• h7llo,
• huklo,
• huplo,
• huloo,
• yhullo

• hill,
• hall,
• Hell,
• hollow,
• hula,
• hull,
• hulls,
• hello,
• halo,
• holly,
• hurl,
• he'll,
• Huller.

The adjective form of the word "hullo" is "hulloish".

The plural of the "hullo" can be the "hullos".

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