| living end | | | |
| load of shit | | | |
| loaf about | | | |
| lock into | | | |
| lone gunman | | | |
| long-burning | | | |
| long finger | | | |
| long odds | | | |
| long run | | | |
| long time | | | |
| long time no see | | | |
| look down on | | | |
| look for a dog to kick | | | |
| look into | | | |
| look on the bright side | | | |
| look out for someone | | | |
| look the part | | | |
| look up to | | | |
| loose cannon | | | |
| loosen someone's tongue | | | |
| loose tongue | | | |
| Lord willing and the creek don't rise | | | |
| lab rat | | | |
| lady garden | | | |
| land in someone's lap | | | |
| land poor | | | |
| last burst of fire | | | |
| last mile | | | |
| last resort | | | |
| last thing | | | |
| latch onto | | | |
| laugh all the way to the bank | | | |
| laugh in one's sleeve | | | |
| laundry list | | | |
| lay at someone's door | | | |
| lay eggs | | | |
| lay it on thick | | | |
| lay on | | | |
| lay over | | | |
| lay the wood | | | |
| lead foot | | | |
| lead someone to the altar | | | |
| lead up to | | | |
| leap to mind | | | |
| least said, soonest mended | | | |
| leave at the door | | | |
| leave it all on the field | | | |
| leave no crumbs | | | |
| leave someone at the altar | | | |
| leave someone in the lurch | | | |
| leave someone to their own devices | | | |
| leave the nest | | | |
| left-handed compliment | | | |
| legend in one's own lifetime | | | |
| lend an ear | | | |
| let alone | | | |
| let down | | | |
| let it all hang out | | | |
| let me tell you | | | |
| let one go | | | |
| let's be having you | | | |
| let slide | | | |
| let someone down gently | | | |
| letters after one's name | | | |
| let the grass grow under one's feet | | | |
| let things be | | | |
| level-headed | | | |
| libel chill | | | |
| lick log | | | |
| lick out | | | |
| lie at someone's door | | | |
| lie in one's throat | | | |
| life is too short | | | |
| life-or-death | | | |
| lift someone's spirits | | | |
| light-bulb moment | | | |
| light into | | | |
| lightning-quick | | | |
| lights out | | | |
| light up a room | | | |
| like a demon | | | |
| like a phoenix from the ashes | | | |
| like mother, like daughter | | | |
| like talking to a wall | | | |
| like water off a duck's back | | | |
| line of country | | | |
| line up one's ducks | | | |
| lion-hearted | | | |
| lion's share | | | |
| little emperor | | | |
| little head | | | |
| live a lie | | | |
| live beyond one's means | | | |
| live it up | | | |
| live on | | | |
| live rent-free in someone's head | | | |
| live to tell the tale | | | |
| living proof | | | |
| loaded word | | | |
| loaf around | | | |