Englishfell1
verb
1 all the dead sycamores had to be felled:
cut down, chop down, hack down, saw down, knock down, hew, demolish, tear down, bring down, raze, level, clear.
2 I felled him with one punch | he was felled by a sniper's bullet:
knock down, knock over, knock to the ground, bowl over, strike down, bring down, bring to the ground, rugby-tackle, topple, ground, prostrate, catch off balance;
knock out, knock unconscious;
kill, cut down, mow down, pick off, shoot down, gun down, blast;
informal deck, floor, flatten, down, knock for six, knock into the middle of next week, lay out, KO.
fell (2) Oxford Dictionary of English