Finally, in our most recent song, we saw a single imperfect appear twice—this time in the qal and mostly not irregular. I say “mostly” because the first letter in the root (ע) is guttural. And gutturals, as you will recall, love to attract a-class vowels. Thus, it is תַּעֲרֹג and not תִּעְרֹג.
As for meaning, we find here an example of a customary action which is best expressed with the present tense in this case.
כְּאַיָּל תַּעֲרֹג עַל־אֲפִיקֵי־מָיִם — “as a deer pants over streams of water”
כֵּן נַפְשִׁי תַעֲרֹג אֵלֶיךָ אֱלֹהִים — “so my soul pants unto you, God”