"Make" is an irregular verb. Its past tense is "made," which does not follow the standard pattern of adding "-ed" to the base form. Irregular verbs do not conform to the typical conjugation rules, and "make" is a common example of this.
"Have" is an irregular verb in English.
It's irregular.
regular or irregular
It's an irregular verb.
It's an irregular verb.
To swim is an irregular verb.
It's an irregular verb.
It's an irregular verb.
Ate is an irregular verb.
By is not a verb, so it is neither regular nor irregular.
Shown is an irregular verb because shown is different to ending in -ed. Does shown end in -ed? No it doesn't end in -ed so which makes it an irregular verb.
irregular