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The future tense of "grin" is "will grin."
No, "grins" is not the plural of "grin." "Grins" is the present tense form of the verb "grin." The plural of "grin" is "grins."
Smirk, grin.
yes. you can use the phrase
malevolent grin
Grin has written:
'The seeker of adventure'