Gothic verbs have the most complex conjugation of any attested Germanic language. Most categories reconstructed for the Proto-Germanic verb system are preserved in Gothic. Knowledge of the Proto-Germanic verb is itself to a large degree based on Gothic, meaning that its reconstruction may be fragmentary.

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In conjugations, note that stem-final -b- /β/ and -d- /ð/ change spelling and pronunciation to become -f /ɸ/ and -þ /θ/ respectively at the end of a word. Stem final -g- /ɣ/ also presumably became /x/, but the spelling does not change. Similarly, verb stems ending in -ái-, -áu-, -ē-, -iu-, and -ō- become -aj-, -aw, -ai-, -iw, and -au- respectively, before vowels. Expected *áij, *áuw, and *iuw are always simplified into ái, áu, and iu (respectively).

Germanic language strong verbs are verbs that change the vowel in the stem to form the past and past participle, rather than add a suffix. For an English example, contrast fall-fell-fallen (strong) from fell-felled (weak).

The following is a table of all the different types and subtypes of strong verbs.

The "general" stem is used for the present tense, infinitive and imperative. The "past 1" stem is used for the past tense indicative singular, and the "past 2" is used for the dual and plural indicative past as well as the past optative past in all numbers.

Classes 5 and 6 have a small subclass of verbs that use the consonant suffix -j- in the general form, but drop it elsewhere

Reduplicating/ Class 7 strong verbs that begin with a vowel simply add aí- as a prefix, without adding a consonant to reduplicate or separate the "aí" prefix from the stem vowel.

The following strong verbs are extant in Gothic:

• Class 1: beidan "to await" (báiþ), beitan "to bite", digan "to knead", dreiban "to drive" (dráif), greipan "to seize", hneiwan "to bow", bileiban "to remain" (biláif), ga-leiþan "to go", urreisan "to arise", skeinan "to shine", disskreitan "to rend", gasmeitan "to smear", sneiþan "to cut", speiwan "to spit", steigan "to ascend", sweiban "to cease" (swáif), weipan "to crown", inweitan "to worship";
• Class 1, before h, ƕ, r: leiƕan "to lend", ga-teihan "to tell", þeihan "to thrive", þreihan "to press upon", weihan "to fight";
• Class 2a: ana-biudan "to bid" (anabáuþ), biugan "to bend", driugan "to serve as a soldier", driusan "to fall", giutan "to pour", hiufan "to mourn", dishniupan "to break asunder", kiusan "to test", kriustan "to gnash"; liudan "to grow" (láuþ), liugan "to lie", fraliusan "to lose", niutan "to enjoy", siukan "to be sick", af-skiuban "to push aside" (afskáuf), sliupan "to slip", usþriutan "to trouble";
• Class 2a, before h, ƕ, r: tiuhan "to lead", þliuhan "to flee";
• Class 2b: galūkan "to shut";
• Class 3: bindan "to bind", bliggwan "to beat", brinnan "to burn", drigkan "to drink", filhan "to hide", finþan "to find", usgildan "to repay", duginnan "to begin", hilpan "to help", frahinþan "to capture", aflinnan "to depart", rinnan "to run", siggwan "to sing", sigqan "to sink", fraslindan "to swallow up", spinnan "to spin", stigqan "to thrust", swiltan "to die", ana-trimpan "to tread on", atþinsan "to attract", þriskan "to thresh", wilwan "to rob", windan "to wind", winnan "to suffer", gawrisqan "to bear fruit";
• Class 3, before h, ƕ, r: baírgan "to keep", ufgaírdan "to gird up", ƕaírban "to walk", afswaírban "to wipe out", gaþaírsan "to wither", waírpan "to throw", waírþan "to become";
• Class 4a: brikan "to break", niman "to take", qiman "to come", stilan "to steal", ga-timan "to suit";
• Class 4a, before h, ƕ, r: baíran "to bear", ga-taíran "to destroy";
• Class 4b: trudan "to tread";
• Class 5: diwan "to die" (dáu), fitan "to travail in birth", giban "to give" (gaf), bi-gitan "to find", hlifan "to steal", ligan "to lie down", lisan "to gather", mitan "to measure", ganisan "to be saved", niþan "to help", qiþan "to say", rikan "to heap up", sitan "to sit", sniwan "to hasten" (snáu), gawidan "to bind" (gawaþ), gawigan "to shake down", wisan "to be, remain", wrikan "to persecute";
• Class 5, j-present: bidjan "to pray"
• Class 5, irregular: fraíƕnan "to ask"; itan "to eat";
• Class 5; before h, ƕ, r: saíƕan "to see";
• Class 5; before h, ƕ, r; -n- present: fraíhnan "to ask";
• Class 6: alan "to grow", usanan "to expire", ga-daban "to beseem" (gadōf), ga-draban "to hew out" (ga-drōf), ga-dragan "to heap up", faran "to go", graban "to dig" (grōf), af-hlaþan "to lade", malan "to grind", sakan "to rebuke", skaban "to shave" (skōf), slahan "to smite", swaran "to swear", þwahan "to wash", wakan "to wake";
• Class 6, -j- present: fraþjan "to understand", hafjan "to raise", hlahjan "to laugh", ga-raþjan "to count", ga-skapjan "to create", skaþjan "to injure", wahsjan "to grow";
• Class 6, irregular: standan "to stand" (stōþ);
• Class 7a; -a- present: us-alþan "to grow old", blandan "to mix", falþan "to fold", gaggan "to go" (past supplied by iddja), haldan "to hold", anapraggan "to oppress", saltan "to salt", gastaldan "to possess", waldan "to rule";
• Class 7a; -ā- present: fāhan "to seize", hāhan "to hang";
• Class 7a; -ái- present: afáikan "to deny", fráisan "to tempt", háitan "to call", láikan "to leap", máitan "to cut", skáidan "to divide" (skaískáiþ), gaþláihan "to cherish, comforẗ";
• Class 7a; -ē- present: uf-blēsan "to blow up, puff up", slēpan "to sleep";
• Class 7a; -ō- present: blōtan "to worship", *flōkan "to bewail", ƕōpan "to boast";
• Class 7a; -au- present: *lauan "to revile" (*laílō); possibly also *bnauan "to rub", which may be a Class III weak verb (see below);
• Class 7a; -áu- present: áukan "to add", hláupan "to leap", stáutan "to smite";
• Class 7b; -ē- present: grētan "to weep", lētan "to let", garēdan "to reflect upon" (garaírōþ), tēkan "to touch";
• Class 7b; -ai- present: saian "to sow", *waian "to blow".

The following is a sample paradigm of a strong verb, niman "to take" (Class 4):

Weak verbs in Germanic languages are defined by the past tense being formed by a suffix, rather than the stem vowel changing. In the case of Gothic, further subclasses are defined by the vowel that comes before the past-tense prefix, as well as other forms of the verb. Generally, the present tense, infinitive, and imperative share the same personal suffixes with strong verbs.

The following table outlines the common past-tense suffix between weak verbs; note that a thematic vowel is always used before this suffix:

So-called "preterite-present verbs" are a feature of Germanic languages that have a present tense formed like the past tense (or "preterite") of strong verbs. The verbs often have the semantics of modal verbs, and in fact the present-day English modal verbs "can, could, may, might, shall, should, must" are descended from Old English preterite-present verbs. The past tense of these verbs is a new formation and has the endings of weak verbs. Arguably, all seven classes of strong verbs are represented in Gothic by at least one preterite-present verb.

The following table presents almost all extant forms of each of the existing preterite-present verbs in Gothic. Many of the missing forms can be derived from existing forms as the number of principal parts is small—in fact, three is usually enough: First/third person singular present indicative, first (or third) person plural present indicative, first/third person singular past indicative. However, occasional small irregularities may occur, and the table below errs on the side of under-generalization. Forms with an *italicized asterisk are reconstructions based on knowledge of other forms or forms from other Germanic languages.

Furthermore, present participles are given a gloss, since the participle often has an unpredictable meaning; especially when the verb in question is inherently intransitive. *ōgan ("to fear") is the only verb in the group known to have an imperative.

Stem-final -g- in magan, ōgan, and áigan is often changed to -h-, especially before voiceless consonants. Áigan has the derivative faír-áigan ("to partake of").

Presumed verbal stems, given the extant forms:

"Present 1" refers to the indicative present singular personal forms, and "Present 2" refers to all other forms in the present; as well as the imperative and infinitive.

Presumed subject suffixes, given the extant forms:

• Gothic language
• Grammar of the Gothic Language
• Proto-Indo-European verb:
  • Ancient Greek grammar
  • Latin conjugation
  • Sanskrit verbs

• Bennett, William Holmes (1980). An Introduction to the Gothic Language. New York: Modern Language Association of America.
• Wright, Joseph (1910). Grammar of the Gothic Language. Oxford: Clarendon Press.