The simple past tense (-di, -ti, -ði)

The Simple Past Suffixes

Most Icelandic verbs are "weak" and form the past tense by adding -di, -ti, or -ði to the verb stem. For ég (I) and hann/hún/það (he/she/it), the ending is simply the suffix plus -i.

The suffix depends on the stem's final sound:

Use -di after voiced consonants like l, m, or n (e.g., gleymagleymdi, hringjahringdi).

The woman called me recently.
Konan hringdi nýlega í mig.
Yesterday I forgot to call him.
Í gær gleymdi ég að hringja í hann.

Use -ti after voiceless consonants like k, p, t, or s (e.g., kíkjakíkti).

I checked the email yesterday.
Ég kíkti á tölvupóstinn í gær.

Use -ði after g, r, f, or a vowel (e.g., byggjabyggði).

They built the house recently.
Þeir byggðu húsið nýlega.

Other Pronouns

To conjugate for plural pronouns, drop the singular -i and add the plural endings:

  • við: -um (e.g., reyndum)
  • þið: -uð (e.g., reynduð)
  • þeir/þær/þau: -u (e.g., byggðu)
We tried to check the message.
Við reyndum að kíkja á skilaboðin.

For þú (you, singular), add -r to the singular form (e.g., -dir, -tir, -ðir).

Did you hear what he asked?
Heyrðir þú hvað hann spurði?

Stem Changes

Watch for verbs whose stem ends in d or ð—they often merge with the past tense suffix. For example, þýða (to mean) becomes þýddi.

The teacher taught me what the word meant.
Kennarinn kenndi mér hvað orðið þýddi.
I was tired and forgot to read the email.
Ég var þreyttur og gleymdi að lesa tölvupóstinn.
My grandfather built this house.
Afi minn byggði þetta hús.