Usages of athuga
Orðaforðinn minn verður stærri þegar ég les mikið og athuga orð í orðabók.
My vocabulary becomes larger when I read a lot and look up words in a dictionary.
Ég athuga samninginn vandlega áður en ég undirrita hann.
I check the contract carefully before I sign it.
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We have an entire course teaching Icelandic grammar and vocabulary.