Suffixes are short groups of sounds that are added to the end of something else. Here, we talk about stem suffixes, which are added to the end of a nominal or a verb stem.
-tara
-tara is often added to adjectives. It has the meaning of "more."
sundaraḥ ⟶ sundarataraḥ
beautiful ⟶ more beautifulbalavān ⟶ balavattaraḥ
strong ⟶ more strong, stronger
-tama
-tama is often added to adjectives. It has the meaning of "most."
sundaraḥ ⟶ sundaratamaḥ
beautiful ⟶ most beautifulbalavān ⟶ balavattamaḥ
strong ⟶ most strong, strongest
-vat (-vān, -vatī)
-vat is often added to nouns. It has the meaning of "possessing" or "characterized by." Depending on the word's gender, it may also appear as -vān or -vatī.
balam ⟶ balavān
strength ⟶ having strength, strong