immersed

im·merse  (-mûrs)

tr.v. im·mersed, im·mers·ing, im·mers·es

1. To cover completely in a liquid; submerge.

2. To baptize by submerging in water.

3. To engage wholly or deeply; absorb: scholars who immerse themselves in their subjects.

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[From Middle English immersed, embedded deeply, from Latin immersus, past participle of immergere, to immerse : in-, in; see in-² + mergere, to dip.]

Thesaurus

immersed

adjective engrossed, involved, absorbed, deep, busy, occupied, taken up, buried, consumed, wrapped up, bound up, rapt, spellbound, mesmerized, in a brown study