simple.wiktionary.orgform - Simple English WiktionaryWikipedia logo form is on the Basic English 850 List. (UK) IPA (key): /fɔːm/, SAMPA: /fO:m/ (US) IPA (key): /fɔrm/, SAMPA: /fOr\m/ (countable & uncountable) Form is the shape or structure of a person or a thing. A thing that makes shapes to other things, as in a mold. (countable) A form is a blank document which is to be filled in by a person. To join with the club, please fill in this application form. Plain form form Third-person singular forms Past tense formed Past participle formed Present participle forming If you form something, you give it shape or structure.