if it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck (English, proverb)
expansion: if it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck
Senses:
glosses: A subject can be identified by observing its habitual characteristics.
Forms:
form: if it looks like a duck, swims like a duck, and quacks like a duck, then it's probably a duck
tags: alternative