VERBS

appear, be, look, seem
become

ADV

exceptionally, extremely, genuinely, really, very
Frank was a genuinely friendly sort
perfectly
He seemed detached, almost bored, but perfectly friendly
almost
For once he seemed almost friendly
quite, reasonably
not exactly, not particularly
Her manner was not exactly friendly
naturally

PREP

to, towards
He was always friendly towards me

VERBS

be, seem
become, get
remain

ADV

very
pretty, quite
They were quite friendly when they worked together

PREP

with
She's very friendly with Maureen

PHRASES

be on friendly terms (with sb)
We have managed to remain on friendly terms

VERBS

be

ADV

environmentally
environmentally friendly cleaning products

PHRASES

child-/family-friendly
Employers are being encouraged to adopt family-friendly measures like flexible hours
ozone-friendly, user-friendly