How do you spell contain?

The correct spelling is C-O-N-T-A-I-N. To keep within limits: such as

How to Spell contain

contain

contain - verb

To keep within limits: such as

Check, halt

To follow successfully a policy of containment toward

To prevent (an enemy or opponent) from advancing or from making a successful attack

Source: Merriam-Webster Dictionary API

Etymology

Middle English conteynen, borrowed from Anglo-French cunteign-, cunteyn-, present tense stem of contenir, cuntenir, going back (with conjugation change) to Latin continēre "to hold together, restrain, have as contents," from con- con- + tenēre "to hold, occupy, possess"