• xhecksum,
• vhecksum,
• fhecksum,
• dhecksum,
• cgecksum,
• cbecksum,
• cnecksum,
• cjecksum,
• cuecksum,
• cyecksum,
• checksun,
• checkisum,
• checkesum,
• cheksum,
• shecksum,
• check sum,
• theciuum,
• check-sume,
• chek-sum,
• checke-sum

• check-in,
• chacma,
• chisum,
• check in.

The adjective form of the word "checksum" is "checksummed".

The plural of the "checksum" can be the "checksums".

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