What is another word for differ?

Common synonyms for differ include disagree, dissent, take issue.

What is the past tense of differ?

The past tense of differ is differed.

/ˈdɪfɚ/verb2 syllables

Differ means: be of different opinions.

verb, as in be of different opinions

also used for differ

ablude, mismatch, vary, diff

Includes material from Wiktionary, CC BY-SA 4.0.

verb

be of different opinions“I beg to differ!”

be different“These two tests differ in only one respect”

Definitions from the Open English WordNet, CC BY 4.0.

These all differ from each other in language, customs and laws.shekitten
Since there is nothing else to refer to, evaluations may differ between individuals.pip
In grammar and vocabulary, some dialects differ considerably from the standard language.rul
Life choices should be respected, even if they differ from our own.Nuel
Great minds think alike, but fools seldom differ.Ooneykcall
In grammar and vocabulary, some dialects differ significantly from the standard language.Mickey
In that respect, my opinion differs from yours.CM
Strictly speaking, his view differs somewhat from that of his opponents.CM

Sentences from Tatoeba, CC BY 2.0 FR, credited to their authors.

as a verb