surfing

From Wiktionary

Pronunciation[change]

Noun[change]

Singular
surfing

Plural
none

Surfing
  1. (uncountable) Surfing is a sport of riding water on a surfboard.

Verb[change]

Plain form
surf

Third-person singular
surfs

Past tense
surfed

Past participle
surfed

Present participle
surfing

  1. The present participle of surf.