Infinitive
Any verb in its root form. Always ends in -ar, -er, or -ir. Translated “to _____.”
Conjugation
Act of breaking down an infinitive into its person and number.
Person
Who is talking to whom.
Number
How many are speaking/performing the action.
Gender
Tells if a noun is masculine or feminine.
Stem-changing
A verb that requires you to change the root stem during conjugation.
Reflexive
Infinitive verb ending in -se. Gives extra emphasis to the person.
Tense
Tells when the action of the verb takes place.
Stem
The part of the verb prior to the -ar, -er, or -ir ending.