verb / noun
recline
rih-KLYNE/rɪˈklaɪn/
A relaxed backward-leaning position, or moving into it.
The woman reclines against the tilted backrest with her legs on the raised footrest.

Etymology
The pieces express bending back. The verb first described causing someone or something to lean backward or lie down, then came to describe resting in that position oneself.
In context
chairs like recline back though so he's not just like slouching in it he's like actually just leaning back in the chair
More examples
- Press this button to recline the seat.
- He reclined against the pillows after a long day.
- A slight recline makes the chair more comfortable.
Forms
recline · reclines · reclined · reclining
recliner noun — An armchair with a back that tilts.