Third-person singular present tense: he, she, or it covers with smiles or smiles upon.
From besmile plus the third-person singular -s ending. Standard present tense conjugation.
In archaic and poetic English, verbs like 'besmile' were used to create effects modern English achieves differently—instead of 'she besmiles him,' we'd say 'she smiles at him warmly.' Archaic verbs often seem ornamental until you realize they made expression more economical.
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