Adjective

• S: (adj) inward (relating to or existing in the mind or thoughts) "a concern with inward reflections"
• S: (adj) inbound, inward (directed or moving inward or toward a center) "the inbound train"; "inward flood of capital"

Adverb

• S: (adv) inward, inwards (toward the center or interior) "move the needle further inwards!"
• S: (adv) in, inwards, inward (to or toward the inside of) "come in"; "smash in the door"