"engrossed" in the verb sense
1. steep, immerse, engulf, plunge, engross, absorb, soak up
devote (oneself) fully to
"He immersed himself into his studies"
2. absorb, engross, engage, occupy
consume all of one's attention or time
"Her interest in butterflies absorbs her completely"
"engrossed" in the adjective sense
1. captive, absorbed, engrossed, enwrapped, intent, wrapped
giving or marked by complete attention to
"that engrossed look or rapt delight"
"enwrapped in dreams"
"so intent on this fantastic...narrative that she hardly stirred"- Walter de la Mare
"rapt with wonder"
"wrapped in thought"
2. engrossed
written formally in a large clear script, as a deed or other legal document
Source: WordNet® (An amazing lexical database of English)
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