Beginning, in slang, 5 letters
Beginning, informally, 5 letters
Beginning, so to speak, 5 letters
From the ___ (all along), 5 letters
From the ___ (since the beginning, slangily), 5 letters
Square one, in slang, 5 letters
Square one, slangily, 5 letters
Very beginning, slangily, 5 letters
Very beginning, so to speak, 5 letters
Start-or start urging?, 10 letters
___ at (become proficient in), 7 letters