تفكّك

It (a thing) became much, or widely, separated: and became unclosed. (O, TA.)

تفكّكت السَّفِينَةُ The ship parted asunder; became disjointed; became separated in its places of joining. (Mgh in article خلع.)

See also 7.

And see 4.

You say also, هُوَ يَتَفَكَّكُ meaning (tropical:) He is [or acts] without power of self-restraint, in consequence of stupidity, or unsoundness of intellect, (S, O, K, TA,) in his gait, and in his speech: (TA:) or تَفَكَّكَ in walking is synonym with تَخَلَّعَ, (S and K and TA in article خلع,) i. e. [he was, or became, loose in the joints; or] he shook his shoulder-joints and his arms, and made signs with them. (TA in that article)