Equivalent in meaning or effect; amounting to the same thing in practical terms, even if being technically distinct.

(obsolete) To amount to as much; to be equivalent.

(obsolete) Something which has the same value or amount (as something else). (attributive use passing into adjective, below)

simple past tense and past participle of tantamount

present participle of tantamount

plural of tantamount

Third-person singular simple present indicative form of tantamount