The word subía is the imperfect form of subir in the first person singular. There are other translations for this conjugation.
See the full subir conjugation

subir

to go up
TRANSITIVE VERB
(to ascend)-to go up
Synonyms for subir
escalar
to climb
trepar
to climb
ascender
to promote
remontar
to go up
remontarse
to soar up
subir por
to go up
volar
to fly
Antonyms for subir
bajar
to go down
descender
to fall
bajar por
to go down
caer
to fall
hundirse
to sink
sumergirse
to dive
TRANSITIVE VERB
(to increase)-to raise
Synonyms for subir
ascender
to rise
aumentar
to increase
elevar
to raise
Antonyms for subir
cercenar
to cut down
disminuir
to reduce
acortarse
to get shorter
adelgazar
to lose weight
aliviarse
to ease
amainar
to die down
atenuar
to alleviate
minimizar
to minimize
minimizar
to play down
paliar
to ease
reducir al mínimo
to reduce to a minimum
TRANSITIVE VERB
(to raise up)-to lift
Synonyms for subir
alzar
to lift
aupar
to help up
elevar
to lift
enarbolar
to hoist
erguir
to raise
levar
to weigh
izar
to raise
Antonyms for subir
amainar
to take in
dejar caer
to drop
INTRANSITIVE VERB
(to ascend)-to go up
Synonyms for subir
elevarse
to rise
ascender
to promote
encaramar
to lift up
Antonyms for subir
bajar
to go down
INTRANSITIVE VERB
(to board)-to get on
Synonyms for subir
abordar
to board
subirse a
to get on
levantar
to raise
montar en
to ride
montar en
to travel by
INTRANSITIVE VERB
(to increase)-to go up
Synonyms for subir
ascender
to rise
aumentar
to increase
encarecer
to raise the price of
Antonyms for subir
disminuir
to decrease
menoscabar
to diminish
minimizar
to minimize
minimizar
to play down
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