The gerund (gerundio) is a special, invariable form of the verb which always ends in -ndo in Spanish, for example: hablando, comiendo, viviendo. An alternate name for it is simply "the -ndo form".
aceptar (to accept)
aceptando
apagar (to shut off)
apagando
bailar (to dance)
bailando
cambiar (to change)
cambiando
cancelar (to cancel)
cancelando
cantar (to sing)
cantando
cerrar (to close)
cerrando
comenzar (to start)
comenzando
comprar (to buy)
comprando
contar (to count, to tell)
contando
cortar ( to cut, to cut off )
cortando
dar (to give)
dando
dañar (to damage)
dañando
dejar (to let, allow)
dejando
deletrear (to spell)
deletreando
desear (to wish)
deseando
despertar (to wake up)
despertando
dibujar (to draw)
dibujando
encontrar (to find)
encontrando
enseñar (to teach)
enseñando
enviar (to send)
enviando
escuchar (to listen)
escuchando
esperar (to wait)
esperando
estudiar (to study)
estudiando
explicar (to explain)
explicando
firmar (to sign)
firmando
fumar (to smoke)
fumando
gastar (to spend)
gastando
hablar (to speak)
hablando
intentar (to attempt)
intentando
jugar (to play)
jugando
limpiar (to clean)
limpiando
llenar (to fill)
llenando
mirar (to watch)
mirando
nadar (to swim)
nadando
necesitar (to need)
necesitando
organizar (to organize)
organizando
pagar (to pay for)
pagando
peinar (to comb)
peinando
pensar (to think)
pensando
preguntar (to ask, inquire)
preguntando
prestar (to loan)
prestando
reparar (to repare)
reparando
terminar (to finish)
terminando
tomar (to take, to drink)
tomando
trabajar (to work)
trabajando
usar to use, to wear
usando
utilizar (to utilize)
utilizando
viajar (to travel)
viajando
volar (to fly)
volando