1.
If you ~ something, for example in the dark, you try to find it by moving your hand around until you touch it.
I felt for my wallet and papers in my inside pocket...
I slumped down in my usual armchair and felt around for the newspaper.
PHRASAL VERB: V P n, V adv/prep P n
2.
If you ~ someone, you have sympathy for them.
She cried on the phone and was very upset and I really felt for her.
PHRASAL VERB: V P n