-ir
vir
-er
antever | entrever | prever | rever
acender | acolher | anteceder | apreender | aprender
equivaler
-gir
atingir | cingir | coligir | compungir | fingir
-azer
trazer
Attention to not confuse the verbal form Trazer with the adverb Trás
conduzir | deduzir | induzir | introduzir | produzir
-ossir
tossir
ter
-der
suspender
-ubir
subir
-ortir
sortir
-ervir
servir
-ser
ser
Extremely irregular verb with several radicals: eu serei, eu era, eu fui
-entir
consentir | desmentir | pressentir | assentir | dissentir
-eguir
conseguir | perseguir | prosseguir
-udar
amiudar
abstrair | atrair | contrair | descontrair | distrair
Because of the similar pronunciation it is very common to confuse the forms "eu saio" (present) with "ele saiu" (past)
-aber
saber
-uir
ruir
sorrir
Because of the similar pronunciation it is very common to confuse the forms "eu rio" (present) with "ele riu" (past)
-unir
reunir
-orquir
extorquir
Most common: responder, replicar
-cir
ressarcir
-rer
requerer
-etir
competir
acupremir | aturdir | banir | brandir | carpir
-ar
relampaguear
-ectir
reflectir
Most common: pensar, meditar, considerar
acarear | alardear | altear | aperrear | arear
Most common: relampejar
-aver
reaver
-erer
querer
Querer as an irregular verb, presents a change in a radical quer- and quis-
desprover
-ger
abranger | constranger | desproteger | ranger | reger
-ibir
coibir
-enir
prevenir
-nder
prender
-erir
aferir | auferir | conferir | deferir | desferir
precaver
prazer
-ôr
pôr
The circumflex accent of pôr helps to differentiate the verb from the preposition por
-olir
polir
Polir, as an irregular verb, presents a change in the radical pol- and pul-
-oder
poder
Poder, as an irregular verb, presents some changes in the radical pod-, pud- and poss-
perder
-dir
desimpedir | despedir | expedir | impedir | medir
Pedir, as an irregular verb presents a change in some forms between d and ç
pagar
-uvir
ouvir
Ouvir, as an irregular verb presents a change in the radical ouv- and ouç-
-tir
omitir
-iar
odiar
conter | deter | entreter | manter | reter
-car
neviscar
morrer
-oer
corroer | remoer | roer
-atar
matar
reler
later
jazer
ir
-estir
revestir | vestir
inserir
haver
grassar
admitir | adquirir | aluir | aplaudir | assistir
gastar | malgastar | salvar | soltar | sujeitar
fulgir
-ugir
fugir
Fugir is written with g, however, must be written with j before the vowel a and before the vowel o
frigir
-emir
premir
abarcar | abdicar | abjudicar | açambarcar | achacar
afazer | contrafazer | desfazer | liquefazer | perfazer
aguerrir | comedir | esbaforir | espavorir | fornir
-guir
extinguir
-imir
imprimir | reimprimir
expulsar
-elir
expelir
estar
Estar has its own conjugation pattern. In everyday communication it usually undergoes a suppression of the first syllable leaving only tá. Tá demorando, tá chovendo, tá trabalhando
-ever
circunscrever | descrever | inscrever | manuscrever | prescrever
-uer
erguer
-upir
desentupir
entregar
abolir
-ergir
imergir | submergir
embair
reeleger
-ormir
dormir
Dormir is written with u only in some irregular forms of the present indicative, present subjunctive and imperative: Eu durmo, que eles durmam, durma você
condoer
-zer
bendizer | contradizer | desdizer | maldizer | predizer
-ertir
advertir
aspergir | convergir
atribuir | contribuir | desobstruir | diminuir | fruir
languir
dispersar
construir | reconstruir
constituir | instituir | prostituir | reconstituir | restituir
-espir
despir
-obrir
cobrir | encobrir
dar
Dar presents changes on its radical when conjugated in subjunctive
-uspir
cuspir
descrer
corrigir
abater | absolver | absorver | acometer | bater
-ernir
concernir
comerciar
Most common: traficar, agenciar, negociar
-çar
abagunçar | abraçar | adereçar | adoçar | afiançar
Começar presents an irregularity which consists in the exchange of the consonant ç to the consonant c before the vowel e
chover
abnegar | abrigar | ab-rogar | aconchegar | advogar
-erzir
cerzir
caber
Caber is an irregular verb and presents changes in its radical: caib- and coub-
-ulir
escapulir
bramir
advir | convir | intervir | provir | sobrevir
Most common: ajustar, combinar, conciliar
-uar
adequar
delinquir | redarguir
-cer
aquecer
desaprazer
abafar | abaixar | abalar | abalroar | abanar
-or
compor | contrapor | decompor | depor | descompor
-edir
transgredir | progredir | regredir
afligir | coagir | corrigir | dirigir | erigir
-udir
sacudir
abastecer | aborrecer | acrescer | adoecer | agradecer
aceitar
-rir
entreabrir | reabrir
