What is the suffix for run?

The suffix for "run" depends on what you want to add to it. Here are some possibilities:

For verbs:

* -ing: running (present participle)

* -ed: run (past tense/past participle)

* -s: runs (third-person singular present tense)

For nouns:

* -ner: runner (one who runs)

* -way: runway (a track for airplanes)

For adjectives:

* -away: runaway (having run away)

The specific suffix you need will depend on the context and the meaning you want to convey.