Do you mean "monochromatic"?
Another way to say streak is powder color.
Another way to say "heaert to heart" is to say "one to one" it could mean that ,you belong with them or anything to say in commen or somthing charming
One way of stating that one is taking responsibility is to say that one is handling arrangements, or taking initiative. Another way is to say that one is in charge.
Another way to say "1 of 30" is "one out of thirty." Alternatively, you could express it as "1/30" or "one in thirty."
one billion
One alternative way to say "in front" is "ahead of."
50%off
One way to say "the force due to gravity" is "gravitational force."
et cetera is another way to say and so on
everthing you have do or say is related to one direction in one way or another.
yes
Observing one's surroundings.