Affirm

Vine's Expository Dictionary of NT Words

1: Διαβεβαιόομαι (Strong'S #1226 — Verb — diabebaioomai — dee-ab-eb-ahee-o'-om-ahee )

dia, intensive, and bebaioo, to confirm, make sure, denotes to assert strongly, "affirm confidently,"  1—Timothy 1:7;  Titus 3:8 (AV, "affirm constantly").

2: Διϊσχυρίζομαι (Strong'S #1340 — Verb — diischurizomai — dee-is-khoo-rid'-zom-ahee )

as in No. 1, and ischurizosai, "to corroborate" (ischuros "strong;" see Ability , A, No. 2 and C, No. 2 note), primarily signifies "to lean upon," hence, "to affirm stoutly, assert vehemently,"  Luke 22:59;  Acts 12:15 .

3: Φάσκω (Strong'S #5335 — Verb — phasko — fas'-ko )

a frequentative form of the verb phemi (No. 4), denotes "to allege, to affirm by way of alleging or professing,"  Acts 24:9 (RV, "affirming," AV, "saying"); 25:19;   Romans 1:22 , "professing." Some mss. have it in  Revelation 2:2 , instead of the verb lego, "to say." See Profess , Say.

4: Φημί (Strong'S #5346 — Verb — phemi — fay-mee' )

"to say" (primarily by way of enlightening, explaining), is rendered "affirm" in  Romans 3:8 . See Say.

Webster's Dictionary

(1): (v. i.) To declare or assert positively.

(2): (v. i.) To make a solemn declaration, before an authorized magistrate or tribunal, under the penalties of perjury; to testify by affirmation.

(3): (v. t.) to assert or confirm, as a judgment, decree, or order, brought before an appellate court for review.

(4): (v. t.) To assert positively; to tell with confidence; to aver; to maintain as true; - opposed to deny.

(5): (v. t.) To declare, as a fact, solemnly, under judicial sanction. See Affirmation, 4.

King James Dictionary

Affirm afferm' L. affirmo ad and firmo, to make firm. See Firm.

1. To assert positively to tell with confidence to aver to declare the existence of something to maintain as true opposed to deny.

Of one Jesus whom Paul affirmed to be alive.  Acts 25 .

2. To make firm to establish, confirm or ratify as, the Supreme court affirmed the judgment.