noun, noun or participle which takes 'suru'
standing absolutely still
Literary or formal word for standing motionless, as if frozen in place. Often used in descriptive or poetic contexts.
彼はその場に凝立していた。
He stood absolutely still on the spot.
More common and colloquial verb meaning 'to stand stock-still' or 'to stand rooted to the spot'. 凝立 is a rarer, more literary equivalent.
Compound of 凝 (freeze, congeal) and 立 (stand). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning of standing motionless.