Spanish Verbs Made Simple(r) - Hillcrest Elementary

B. (All) Infinitives Ending in -ucir
These are all composites of -ducir (“to lead”) and -lucir (“to shine”). Largely due
to the influence of the -cer verbs, they also adopted -zco endings for the first person
singular:
conducir (to drive) lucir (to shine)
1s conduzco luzco
2s conduces luces
3s conduce luce
1p conducimos lucimos
2p conducís lucís
3p conducen lucen
Similarly:
infinitive 1s 3s
aducir aduzco aduce “to adduce”
deducir deduzco deduce “to deduce”
inducir induzco induce “to induce”
introducir introduzco introduce “to introduce”
producir produzco produce “to produce”
reducir reduzco reduce “to reduce”
seducir seduzco seduce “to seduce”
traducir traduzco traduce “to translate”
deslucir desluzco desluce “to tarnish”, “to discredit”
enlucir enluzco enluce “to plaster”, “to polish”
entrelucir entreluzco entreluce “to show through”
relucir reluzco reluce “to shine”, “to excel”
traslucir trasluzco trasluce “to be translucent”, “to reveal”
4.Verbs Ending in -uir Add -y Except before -i
IRREGULARITIES: PRESENT TENSE 35
Apart from those ending in -guir, all verbs ending in -uir undergo a “predictable”
change:
-uir verbs (apart from -guir)
A -y is inserted after the -u for the three singulars and the third person
plural, i.e., whenever the normally following letter is not an -i.